Follow TV Tropes

Following

Context UsefulNotes / NavalWeapons

Go To

1The weapons you find on warships and submarines and those you fire against them from land or air. [[JustForFun/IThoughtItMeant Not stuff that fires out of your belly button]].
2
3Shipboard weapons cover several areas:
4
5[[foldercontrol]]
6[[folder:Anti-air warfare]]
7Air attack has been a big potential issue for warships since before the UsefulNotes/SecondWorldWar, a war that of course saw the infamous air raid on Pearl Harbor. These days, the primary manifestation of this threat is the anti-shipping missile, launched from an aircraft, ship, submarine or a shore-based battery. You can shoot these down, or preferably, blow up the guy with the missiles before he launches them, and anti-air weapons are good for both.\
8
9Historically, the main determinants of AA effectiveness have been fire control- the ability of your directors (and later radars) to track enough targets, how fast you can fire your guns/launch your missiles, and how likely they are to hit their targets.
10
11[[/folder]]
12
13[[folder:Anti-surface warfare]]
14For much of history, the primary role of warships has been to attack other surface warships or terrestrial targets. This remains a major role today. Ships can work with each other, aircraft, or even soldiers on land to locate and destroy the enemy. Naval support has been a deciding factor in many battles.
15
16[[/folder]]
17
18[[folder:Anti-subsurface warfare]]
19This is without a doubt the hardest warfare area. You can never actually see your opponent; his sensors are probably better than yours, and he is in a better position to hear you than vice-versa. He will be carrying superior torpedoes, and while you have to train to defeat aircraft, surface ships, submarines, ballistic missiles, launch and land your own aircraft, and strike at ground targets, he only has to train against ships and subs. If he's a diesel-electric, he wont' be able to go very fast or stay down forever, but he will be almost totally silent. If he's nuclear-powered, he will be slightly louder but he will be faster than you (!) and be able to stay down for months. As a surface ship your only advantage will be your ability to call for friends, ideally aircraft, because he can't shoot back at them, while he can't communicate with anyone without giving away his position.\
20
21On the other hand, [[HotSubOnSubAction anti-submarine warfare conducted by subs]] is essentially an equal playing field, with the winner determined by a combination of equipment and skill (training).
22
23[[/folder]]
24
25
26Now, on to the different types of naval weapons.
27
28----
29
30!Types of naval weapons
31
32[[folder:Guns]]
33
34Used by ships since cannons were invented, but they became truly effective in the 19th century. The invention of explosive shells, proximity fuzes, and stabilization and fire control systems enabled ships to become convenient floating artillery batteries. Guns can be used in a fire support role for ground troops, for aircraft, point defense against enemy weapons, or to strike specific strategic targets.
35
36!!Naval artillery
37
38The oldest form of surface weapon still in use, and consequently usually the most reliable. In the early 20th century, an arms race resulted in bigger and more powerful guns being built, culminating in the massive guns of UsefulNotes/WorldWarII.\
39
40Main guns were also the original form of shore bombardment. Due to their mechanized nature, their firing rate is much higher than field guns of similar caliber, which have to be light enough to be dragged around by trucks or fitted in a tracked vehicle. One ship can provide nearly the same amount of shells on target at a time as an entire battery of field artillery. Their main limitation is typically range; the ship can only get as close to shore as its draft allows.\
41
42Modern guns are typically of lower caliber (3" to 5") than their predecessors from before WWII (12" to 18") but because of the overwhelming power of modern Anti-Ship Cruise Missiles ([=ASCMs=]), most modern ships are not particularly heavily armored. Guns prior to WWII were built bigger and bigger because the larger the gun, the larger and heavier the shell they could throw and the further they could send it. Battleship guns in particular were built to penetrate battleship armor, necessitating huge, heavy shells that could penetrate through steel that was literally several feet thick. [=ASCMs=] on the other hand carry even larger warheads than the shells, move much faster, and have much longer ranges. Modern Naval architects, therefore, reason that a direct hit by an ASCM would be game over regardless of armor; instead they use the available space and weight for more self-defense weaponry. Thus smaller shells will do just fine, if you can manage to get close enough to use them in the first place. \
43
44Modern guns are usually largely automated, aimed by radar, and have a rate of fire between 20 and 80 rounds per minute, a significant improvement over older weapons that required large crews, were aimed optically, and had slow rates of fire. Range is typically out to the visible horizon, some 10-15 miles. Some can be loaded with [[AbnormalAmmo specialty ammunition]] for use against different threats, though the standard High Explosive is the most common and most useful. They may not be as powerful as missiles but they will get the job done cheaper, more reliably, and at close range, faster.\
45
46A note about the term "caliber": when talking about small arms (pistols, rifles, machine guns, etc) caliber simply refers to the diameter of gun's bore (and thus the width of the bullet). When talking about Naval guns, caliber refers to the ratio of the width of the gun's bore to the gun's length. In other words, a 16"/50 caliber weapon, like the ones carried by the old ''Iowa'' class battleships, has a bore that's 16" wide and a barrel that's 16 x 50 = 800" (66 2/3 feet!) long. Expressing caliber in terms of gun length vs. barrel width is common because it gives you a bunch of other important information about the gun: in general, a longer caliber will mean the shell travels faster leaving the gun, which makes it more accurate and longer range. However a shorter caliber gun will be lighter, which means it is more likely to be able to track fast-moving targets and it will likely have a higher rate of fire.\
47
48'''Examples''':
49
50* The US Mk 45 5"/54 caliber "lightweight" gun (and the 62 caliber version). Lightweight relative to earlier 5"/54 caliber guns, that is; the previous Mk 42 gun of the same caliber had a barrel that was some 50% heavier and a turret assembly nearly triple the Mk 45's weight. This comes at the expense of its rate of fire; at a maximum of 20 rounds per minute the Mk 45 is the slowest-firing ~5" gun currently in service and half the rate of fire of the Mk 42 it replaced. This tradeoff is deemed acceptable for the reduced crew required to operate and maintain it and the weight savings allowing for more of other important equipment (particularly missile systems) to be installed.
51* The US Mk 12 5"/38 caliber gun was the first truly dual-purpose gun (equally effective against ships and aircraft) employed by the US Navy, and was employed on essentially all American warships of destroyer size or larger built between 1934 and 1950 (along with quite a few smaller escort ships and as defensive armament on auxiliary ships) in a wide variety of both open pedestal mounts and enclosed turrets. Some of these could reach a rate of fire as high as 22 rounds per minute despite a significant portion of the loading process being manual, and the Mk 12 in all of its forms was famous for extremely high reliability.
52* The US 6.1"/62 caliber Advanced Gun System, designed to restore "gun cruiser" like shore bombardment capability to the US Navy. Currently used only by the ''Zumwalt''-class destroyers. Given the ''Zumwalt'' class places a heavy emphasis on stealth, the barrels are retractable when not in use. As of November 2016, this gun has no ammunition to fire, as the cost of the precision-guided LRLAP (Long Range Land Attack Projectile) ballooned to nearly $1 million per shell, which was deemed excessive and caused the LRLAP to be cancelled. No other ammunition had ever been designed for the Advanced Gun System, and it's expected to be years before a cheaper shell can be designed.
53* The Russian AKM-130 130mm/70 caliber twin-barreled autocannon. When the original goal of a gun capable 60 rounds per minute (so as to match the smaller AK-100 100mm/70 caliber gun it was replacing) couldn't be reached, in typical Russian fashion the developers simply [[MoreDakka added another gun to the turret]], bringing the combined rate of fire to 80 rounds per minute.
54* The Italian-designed OTO-Melara 76mm/62 caliber gun is used as a smaller but rapid firing gun used by a number of navies, including the US [=FFGs=] (before they were sold or scrapped) and several of the US Coast Guard's cutters.
55* The Swedish-designed Bofors 57mm/70 caliber gun is the primary competitor to the OTO-Melara 76mm, which compensates for its less powerful shells with [[MoreDakka higher rate of fire]]. Likewise used by many navies, including the US Littoral Combat Ships and the latest class of Coast Guard cutters.
56* Though there are none in active service today, the all-big-gun battleships of the 1900s to 1940s were perhaps the most fearsome naval fire support platforms ever.
57** Against naval targets, these guns could punch through absurd amounts of armor at long range; The British battleship HMS ''Warspite'' famously achieved a damaging hit against the Italian battleship ''Guilio Cesare'' at a range of about 26,000 yards (~24km) with her 15"/42 caliber guns, and the German battleship ''Scharnhorst'' achieved a hit at roughly the same range on the British aircraft carrier HMS ''Glorious'' with her 38cm/48.4 caliber guns.
58** Against ground targets, their heavy armor meant that they could take fire from land-based guns and ask for more, and they typically mounted upwards of 9 ''very heavy'' caliber guns. The US ''Iowa'' class ships for example mounted 9 ''16"/50 caliber'' guns which they could fire about every 30 seconds, independently. This means either a full broadside of 9 rounds every thirty seconds or a rolling fire of 1 round every 3 1/3 seconds. [[MoreDakka For an enemy soldier, this was equivalent to a Volkswagen filled with high explosives landing on your position from 20 miles away every few seconds until the Marines told them to stop!]] [[ThereIsNoKillLikeOverkill That, or 9 50-foot craters suddenly appearing at your position at once.]]
59*** The Iowa and Wisconsin were last used during Desert Storm in 1991 to shell Iraqi positions. The Iraqis realized that RQ-2 Pioneer Unmanned Aerial Vehicles (some of the first [=UAVs=] used by the US Navy) were being used to spot targets for the big guns, and eventually just started surrendering when the UAV flew overhead, rather than get blown to smithereens from a ship so far away they couldn't even see her.
60** The nine gun/three turret layout wasn't settled on until relatively late in the game, striking a balance of firepower (very heavy, long-ranged guns) and speed (more turrets or guns meant more weight to slow a ship down). Earlier designs carried varying numbers of guns in varying numbers of turrets, with one British dreadnought mounting ''fourteen'' heavy guns in seven turrets (named for the days of the week, natch. For those of you wondering, it was the HMS ''Agincourt'', armed with 12"/45 caliber guns).
61** The Japanese 18.1"/45 caliber Type 94 guns of the ''Yamato''-class battleships were the largest guns ever mounted on a ship. They were officially designated as being [[BlatantLies 40cm (15.7")]] to conceal their true 46cm (18.1") size. Their shells each weighed 1.5 tons. Each gun weighed 150 tons and each triple turret weighed 2,700 tons...larger than most destroyers of the time.
62
63----
64!!Anti-aircraft guns
65
66With the arrival of aircraft during WWI came weapons to keep them away. During WWII these were the primary anti-aircraft weapons, but were rendered obsolete by the combination of faster carrier aircraft, long range missiles, point defense missiles and CIWS. These are still in limited use for defense against "low-slow fliers" like helicopters or hypothetical small kamikaze aircraft flown by terrorists, as well as for their effectiveness in anti-surface mode against small watercraft. This section focuses on dedicated anti-aircraft guns; note that many other guns mentioned on this page may also be used against aircraft if needed.\
67
68'''Examples''':
69
70* The Browning M2 .50 caliber Heavy Machine Gun was originally designed as an anti-aircraft weapon, and may still be used as such for slower, closer-in targets.
71* The Swedish-designed Bofors 40mm autocannon was widely during WWII. More advanced radar-directed versions are still used today by many navies (with accuracy improved to the point that it's a decent CIWS and also quite effective against small boats, such as [[SuicideAttack those loaded with explosives for suicide bombing]]), with usually only 2-4 guns per ship compared to the dozens (or even [[MoreDakka hundreds]] on aircraft carriers and battleships) of the manually-operated versions in WWII.
72* The Oerlikon 20mm cannon was also widely used during WWII, and newer versions continue to arm many vessels today.
73----
74
75!!Deck guns
76
77Most WWII-era submarines packed some artillery guns on their decks. These guns, usually based on those used on surface vessels, were used to supplement their torpedoes for sinking ships, for bombing shore positions, attacking targets too small for torpedoes, or for defense against aircraft and surface ships. Most deck guns are exposed, though a handful were mounted in turrets. Deck guns are no longer used today, as modern submarines are not meant to engage the enemy in such a direct manner, and the guns increased both underwater drag on the submarine and generated excessive flow noise.\
78
79'''Examples''':
80
81* The American 5"/25 caliber gun, used on most of their WWII submarines.
82* The British XXII 4-inch gun.
83* The Japanese 14 cm/40 11th Year Type gun.
84----
85
86!!Close-In Weapons Systems (CIWS)
87
88Separately from or in cooperation with point defense missiles (see below), these are radar-aimed gun systems designed as a last-ditch defense against incoming missiles. They are typically [[ImprobableAimingSkills highly accurate]] and have [[MoreDakka absurdly high rates of fire]]; with the drawback of short range-even if you do score a hit, momentum will probably still carry the fragments of the incoming missile into the ship. Their ammo consumption is also generally so ludicrously high that even firing in bursts you may run out of ammo even well before a point-defense missile system would.\
89
90In addition to missiles, they can also be used against small boats and aircraft.\
91
92'''Examples''':
93
94* The US Phalanx system uses two radars (both contained in a tall white dome) and a 20mm gatling gun of the same type used by most American fighters. Due to its appearance often referred to by American sailors as [[Franchise/StarWars R2-D2]] with a hard-on, and by British sailors as a [[Series/DoctorWho Dalek]].
95* The Dutch Goalkeeper system, which uses the same tank-killing 30mm seven-barreled gatling gun as the A-10 Warthog. The bigger gun makes it somewhat more effective than the PHALANX, but also significantly heavier (in addition to taking up more below-deck space) and thus less suitable for small ships.
96** The Chinese Type 730 CIWS seems to be a copy of the Goalkeeper's gun and turret, but with locally-designed electronics. The aircraft carrier ''Liaoning'' apparently has some of these that were put on steroids, having a larger turret and a eleven-barrel 30mm gatling, designated Type 1130.
97* The Russian ''Kashtan'' combined gun-missile system, combining short-range missiles with a pair of potent six-barrel 30mm gatling guns that a certain [[VideoGame/TeamFortress2 Russian soldier]] [[MoreDakka would be pleased with]]. ''Kashtan'' is an enlarged version of the land-based 2K22 ''Tunguska'', using the same missiles but replacing the latter's single-barrel 30mm autocannons with the gatlings that were already in widespread Soviet Navy use. Its only real shortcoming is that it's huge (a single ''Kashtan'' turret weighs 16 tons and takes up nearly 20 square meters worth of deck).
98* The Russian AK-630 family consists only of the 30mm gatlings, and is still used for ships that are either too small or lack empty deck space for the massive ''Kashtan''. Unlike the other CIWS systems listed, the AK-630's fire control radar is mounted separately from the turret. The original standard arrangement was [[http://commons.wikimedia.org/wiki/File:Minsk_port_bow.JPG two turrets close together with a single radar mounted nearby]] (or on very small vessels like missile boats, sometimes a single turret), but now a relatively stealthy turret is offered containing two of the gatlings mounted one directly above the other as the [[http://commons.wikimedia.org/wiki/File:Duetak630m2.jpg AK-630M-2 Duet]].
99* The Swiss Oerlikon 35mm Millennium gun stands out for being a CIWS that can be mounted on literally anything that has a few square meters of empty space, as it's entirely self-contained and just bolts onto the deck. Unlike most CIWS systems that rely on high rate of fire, the Millennium gun is a single-barrel revolver cannon that fires somewhat larger rounds with extreme precision that [[StuffBlowingUp explode right in front of the target]] to shower it in shrapnel. Given Switzerland's location, it exists entirely for export to nations that actually have a coastline.
100* The Italian DARDO is similar to the Swiss weapon, mounting two 40mm Bofors cannons in a turret firing high explosive shells.
101* The Spanish Meroka is notable for being 12 20mm barrels stacked six on top one another in a single turret with onboard radar. Much like the Swiss Millennium, the weapon does not rely on high rate of fire, and instead on its massive twelve-round salvoes that act much like a giant shotgun.
102----
103
104!!General purpose machine guns and autocannons
105
106ExactlyWhatItSaysOnTheTin. Smaller-caliber, rapid firing. Machine guns mounted on ships have several advantages over their land-based brethren: The ship itself provides a stable firing platform, an armored position to fight from, and storage space for literally ''tons'' of ammunition. They provide defense against fast-moving small vessels, and in port against personnel on foot and in vehicles. When mounted in small, fast moving boats, they become the primary armament. Some designs can be mounted in automated turrets or remote weapon systems, while others must be aimed and fired by hand.\
107
108'''Examples''':
109
110* The US M2 .50 cal heavy machine gun. You can use it for anything. If you could find a way to get rid of the water in between, you could probably sink submarines with it.
111* The US [=M240B=] 7.62mm medium machine gun.
112* The US Mk 38 Bushmaster is a 25mm chain gun that comes in two varieties: The manually-operated Mod 1 requires a sailor to stand out on deck to aim and fire it, while the Mod 2 is remotely controlled and aimed by video camera (though it can still be manually fired if needed). These units are self-contained and do not penetrate the deck, making them easy to fit onto vessels of all sizes.
113** The US Mk 44 Bushmaster II is a 30mm chain gun (as the name implies, and improved version of the Mk 38) that's mounted in a fully automated turret and is loaded from inside. This design requires below-deck mechanisms to function.
114* The Soviet/Russian [=DShK=] 12.7mm heavy machine gun.
115* The Soviet/Russian PKM 7.62mm medium machine gun.
116----
117
118[[/folder]]
119
120[[folder:Rockets and missiles]]
121
122After WWII, guided missiles began to supplement and eventually replace guns as primary shipboard weapons. Missiles and rockets have since gone on to cover multiple roles.\
123
124
125Older ships use rail-based launchers or box launchers. Rail launchers usually had one or two missiles sitting on rails, basically providing you with one or two missiles available to launch before the launcher would reload from an automated magazine below decks. A box system came with say eight missiles in a launcher out on deck which you would then have to reload manually. These looked visually impressive, but once all missiles were expended, they would take a little while to reload.\
126
127Today, a Vertical Launch System (VLS) is generally used, with missiles placed in silos inside the hull and launched on command. This is basically a box system with a ''much'' higher ammo capacity: it allows you to get a missile off about once a second (or faster), can use different types and sizes of missiles easily, is mechanically much more simple and reliable than the automated reloading and aiming systems associated with rail and box launchers, and reduces your radar cross-section (making you harder to find and hit). However, it isn't easy (or sometimes not even possible) to reload at sea without an ammo ship and special crane, and requires some prior consideration during construction due to the amount of below-deck space they take up (meaning they're harder to retrofit onto already-existing ships). \
128
129There are two main types of VLS, each with their pros and cons:
130* '''Hot Launch''' systems, in which the missile simply ignites within its cell or tube and flies out of it on its own power. These seem simple on the surface; all that is needed is a system for keeping the missile out of the weather until it is ready to launch, which can just be a door, or even a cover that is designed to be broken through during launch. However, something must be done with the hot gasses produced by the weapon on its way out, so an exhaust system is required. Also, if the missile somehow ignites but doesn't leave the tube, something needs to be done to prevent it from lighting off the rest of the missiles in the VLS magazine, so they need some sort of deluge fire suppression system. Despite those complications, the simplicity of the launch itself does allow for rapid response and there are still relatively few things that can go wrong compared to a rail system, and relatively more ammunition available compared to a box system. This approach is generally favored by the US and its allies on surface ships.
131* '''Cold Launch''' systems, where some mechanism, usually a gas generator of some sort, is used to fling the missile clear of the ship before the weapon's motor ignites. These are in some way safer, since there's never any attempt made to ignite the weapon inside the ship, but there is a greater chance of the weapon simply failing to launch due to some issue with the launcher. For surface ships, some consideration must also be made for what happens if the launch system correctly launches the missile but then its motor fails to ignite and gravity takes over. Usually that means angling the launcher so that unignited missiles do not crash back down onto the ship. For submarines this is less of an issue as the water will cushion and carry away any failed missile. This approach is favored by Russia and those using purchased or copied systems on surface ships. Nearly everyone uses it on VLS-equipped submarines, since if enough gas is generated, the missile will have minimal contact with the water before it is airborne.\
132
133Submarines can also launch missiles from torpedo tubes, which does give them some flexibility, at the cost of added complexity; the missiles must generally be encased in some sort of capsule to survive the journey to the surface before igniting. Obviously loading missiles also reduces the amount of space available for torpedoes; and launching missiles in general is a risky proposition for a submarine, since the smoke of the launch will leave a literal trail pointing at the submarine's current position.\
134----
135
136!![=Surface-to-air missiles=]
137
138A Surface-to-Air Missile ([=SAM=]) is [[ExactlyWhatItSaysOnTheTin a missile which is launched from a surface platform and attacks an aircraft or missile.]] Invented in the 1950s, they vary from short-ranged, barely guided early models to modern missiles capable of hitting other missiles in mid air and doing so from hundreds of miles away from the launching ship. Unlike their [[UsefulNotes/AirLaunchedWeapons air-to-air counterparts]], naval [=SAMs=] generally use a command-guidance or semi-active homing scheme; that is, the launching ship either guides the missile the entire way to the target or illuminates the target with a radar beam, the reflection of which the missile homes in on. Considering the self-guiding, "fire and forget" ability of modern missile technology, this seems an anachronism but confers several advantages: by shifting the processing power to the launching ship, the missiles can take advantage of bigger computers, can have more warhead or fuel for the same size missile, and are cheaper, with the same guidance capability. Since the ship can usually point its radars in any direction, following the target around to maintain a lock is not a problem like it is in [[UsefulNotes/PlaneSpotting air-to-air combat.]]\
139
140----
141!!!Area defense surface-to-air missiles
142
143Missiles with a range in excess of 10 nautical miles, used to defend multiple warships. Usually found on destroyers and a job requirement for cruisers. Most are designed to hit incoming missiles and find regular aircraft laughably easy targets.\
144
145'''Examples''':
146
147* The US Standard series, especially linked in with the Aegis system that allows for dozens of targets to be engaged simultaneously and for sharing of targeting information. Originally fired from single- or double-rail launchers, the Mk 41 VLS has become almost universal over the past few decades. Comes in several varieties:
148** The RIM-66 SM-1/SM-2 MR. SM is for Standard Missile, MR is for Medium Range. The original SM-1 is no longer used by the US Navy but some international customers still use them. The SM-2 variant is still used after several updates. Range is roughly 40NM.
149** The RIM-67 Standard SM-2 ER. ER is for Extended Range; it was basically an SM-2 with a bigger diameter rocket booster mounted to the bottom as a first stage and the normal motor used as a second stage, in order to increase it's effective range out to roughly 90NM. The last edition of this missile was designated as the RIM-156A. No longer used and effectively replaced by the SM-6, below.
150** The RIM-161 SM-3 is a variant designed exclusively for midcourse Ballistic Missile Defense (see that topic below). It is basically a small, 3-stage space launch vehicle whose payload is a spacecraft designed to directly collide with other spacecraft. Can also be used as an anti-satellite weapon.
151** The most recent iteration is the long-range RIM-174 ERAM/SM-6. ERAM stands for Extended Range Active Missile. It combines all the best features of the RIM-66, RIM-67/156, and RIM-171, plus the seeker from the AIM-120 AMRAAM air-to-air missile into a single long-range missile. It's equally suited to killing aircraft, incoming anti-ship cruise missiles, ballistic missiles in the terminal part of their trajectory, and even smaller surface ships and boats. It has a range of around 130NM.
152* The Soviet/Russian S-300/SA-N-6 "Grumble" and its successors (the S-300FM/SA-N-20 "Gargoyle") and clones (the Chinese HHQ-9). Launched from specialized cold-launch VLS, though China now has a multiuse grid VLS.
153* The British Sea Dart system, now retired and replaced with the Sea Viper. Fired from a double-rail launcher.
154* The Franco-British Aster-30 (the aforementioned Sea Viper in British service). Fired from the Sylver VLS, a modular system similar to the Mk 41.
155* The Indo-Israeli Barak 8, fired from a single-purpose grid VLS.
156----
157
158!!!Point defense surface-to-air missiles
159
160Found on most smaller ships and also ships like carriers which have no other air-defense systems. These are generally very short-range and are installed as a last ditch effort to save the ship from being hit by missiles that the area-defense weapons miss. These sacrifice range and explosive power for for speed and accuracy, and unlike CIWS systems have the ability to engage multiple targets simultaneously. Can be deployed from a VLS but often still found in box launchers for the ease of mounting on ships that can't fit any larger weapons.\
161
162'''Examples''':
163
164* The US RIM-7 Sea Sparrow. These are fired from deck-mounted 8-round box launchers.
165** The US RIM-162 Evolved Sea Sparrow. Looks rather like a miniaturized Standard despite being [[ExactlyWhatItSaysOnTheTin an evolution of the Sea Sparrow]]. Compatible with existing Sea Sparrow box launchers but in newer ships usually fired from a VLS. Four of them can be packed into a single "cell" of the Mk 41 VLS used for the Standard family, and for smaller ships the Mk 48/Mk 56 family is used.
166* The RIM-116 Rolling Airframe Missile (RAM), which was jointly designed by the US and Germany. 11 or 21 can be carried in a box launcher. The [=SeaRAM=] turret version is basically a modified Phalanx turret, including the distinctive radar dome, with the launcher in the place of the 20mm Gatling, allowing it to function autonomously.
167* The Soviet 9K33M Osa-M/SA-N-4 "Gecko", found mounted on a wide variety of their ships. While the land-based version (9K33 Osa/SA-8 "Gecko") carries 6 missiles in box launchers, the naval model is fired from a twin-rail launcher that, quite unusually, is mounted on a retractable platform with a circular plate covering it when not in use.
168* The Soviet 3K95 Kinzhal/SA-N-9 "Gauntlet", the replacement for the Osa-M. Fired from a VLS.
169* The Soviet 2K22 Tunguska/SA-N-11 "Grison", the missile half of the combined gun/missile Kashtan CIWS.
170* The French Crotale eight-tube system.
171* Also made by the French is the Mistral IR missile, usually mounted in a lightweight six-tube launcher.
172* The British Sea Wolf, which initially used a 6-box launcher but now only the improved VLS version (which also features slightly improved range) is used. Highly accurate; during tests it even shot down [[ShootTheBullet 4.5-inch gun shells]].
173* The Franco-British Aster-15, which is simply Aster-30 with the booster rocket removed. This dramatically reduces its range but also reduces its ''minimum'' range (making it more suitable for point defense) and can be fired from a shallower-depth version of the Sylver VLS (allowing it to be carried by smaller ships, and to take up less space on aircraft carriers).
174* The Umkhonto, a South African VLS-launched IR missile.
175* The FL-3000, a Chinese IR missile that is similar in function and capability to the RAM.
176* The Indo-Israeli Barak 1, mounted in a compact 8-cell VLS.
177----
178
179!!Anti-ship missiles
180
181These are typically the nastiest surface-to-surface threats out there. Also known as Anti-Ship Cruise Missiles (ASCM), they can be launched by aircraft, submarines, ships, or land-based launchers, fly more than 100 miles at extremely low altitude, accelerate to supersonic speed, weave to evade interception, and then impact the target with enough explosives to blow some smaller ships in half.\
182
183It is sometimes argued by historical warship enthusiasts that these missiles would be ineffective at targeting heavily armored ships since they generally do not have much armor piercing capability, and thus the navies of the world should bring back heavily armored battleships with big guns. The argument is also made that current point and area defense surface to air missiles can't effectively knock down a heavy battleship shell. However, the fact that current missiles aren't designed for armor penetration doesn't mean that it's impossible to do so; in fact, it would only require designing and installing a new warhead for existing missiles in most cases. Likewise building a SAM designed to intercept shells would not be difficult with modern technology. And both of these adaptations would take significantly less time and money to design and field than a new type of battleship. Thus, lightly-armored ships with large quantities of anti-ship missiles will remain the norm for the foreseeable future.\
184
185Anti-ship missiles generally come in two types. The first, as described above, are called sea-skimmers. They fly a few feet above the waves to make detecting them on radar extremely difficult, usually at subsonic speeds to extend range. Newer ones are capable of evading point defenses, and some can be programmed to fly a roundabout path to the target to hide where it came from. This is so terrifying for defending units because the low altitude reduces the amount of time to react (a minute or less). Even the best air defense missiles take time to reach the target...and the incoming missile may take less time than that to impact.\
186
187'''Examples''':
188* The US AGM/RGM/UGM-84 Harpoon (the designation varies depending on whether it's air, surface or submarine launched).
189* The US RGM/UGM-109B Tomahawk Anti-Ship Missile (TASM) was introduced in 1983 but retired in 1994. It was a variant of the Tomahawk Land Attack Missile (TLAM) discussed below. The US Navy has since realized it has fallen behind in ASCM technology and since 2020 is modifying some of its [=TLAMs=] to have an anti-ship mode again, calling them Maritime Strike Tomahawks.
190* The French Exocet, infamous for its high performance in UsefulNotes/TheFalklandsWar and UsefulNotes/IranIraqWar.
191* The Russian Kh-35 Uran/SS-N-25 "Switchblade", also known as "Harpoonski" for being a blatant copy of the Harpoon.
192* The Russian 3M-54 Klub/SS-N-27 "Sizzler".
193* The Ukrainian R-360 "Neptune", based off the Kh-35 with substantially improved range and electronics. The missile gained international attention during the 2022 Russo-Ukranian War when two of them fired from a land-based launcher were allegedly used to sink the Russian cruiser ''Moskva''.
194* The Norwegian Naval Strike Missile, which has also been adopted in US service.
195
196The second type are missiles that fly extremely high and extremely fast, and then dive down onto the target. These are less common today because advances in [=SAMs=] mean that despite their speed, their high altitude means that shipboard radars can track them almost their entire flight, giving numerous chances for defenses to engage them. Their one advantage today is that they can typically carry a larger warhead. Some Soviet missiles of this type had one missile in the salvo one would fly up to and use its active radar to search for targets, forwarding this data to the other missiles which remained at low altitude. The missiles could be programmed so that half of a salvo would head for a carrier target, with the rest dividing between other ships. If the high flying missile was shot down another from the salvo would automatically pop up to take its place. The most dangerous (such as those listed below) are the ones that are actually a hybrid of this type and sea-skimmers, which after traveling some distance drop down to extremely low altitude yet maintain their very high speed. The high-flying concept is also seeing something of a revival in design of hypersonic missiles, which attempt to overcome the problem of a long interception window by simply going much faster than was previously possible.\
197
198'''Examples''':
199* The Russian P-500 Bazalt/SS-N-12 "Sandbox"
200* The Russian P-700 Granit/SS-N-19 "Shipwreck", its "little cousin" the P-270 Moskit/SS-N-22 "Sunburn" and the new Indo-Russian PJ-10 "Brahmos"
201
202----
203
204!!Land Attack Cruise missiles
205
206Cruise missiles are flying, self-guided bombs. Many are closer to small unmanned aircraft filled with explosives than they are to regular missiles, being jet-propelled rather than rocket-propelled. They were [[OlderThanTheyThink first invented]] in UsefulNotes/WorldWarI, but the earliest versions to see action were the German V-1 missiles in UsefulNotes/WorldWarII. [[UsefulNotes/ImperialJapan Some nations forgot]] [[SuicideAttack the ''unmanned'' part.]] Modern cruise missiles will usually fly slower than other types of missiles (subsonic), [[ExactlyWhatItSaysOnTheTin cruise]] to the target at low altitude for hundreds of miles, and then impact with "pick a window" accuracy on a target. They are able to be programmed to evade air defenses on their own, and some of these can be fitted with [[AtomicHate nuclear warheads]]. Ships or submarines equipped with Vertical Launch Systems can [[MacrossMissileMassacre pump out dozens of these at a time.]] They are used to strike at strategic targets either close to shore or far inland without endangering the launching unit very much.\
207
208'''Examples''':
209* The most (in?)famous of these is the US BGM-109 Tomahawk Land Attack Missile (TLAM, so named to distinguish it from the Tomahawk Anti-Ship Missile or TASM, which has since been retired), which can be fitted with a single warhead, cluster munitions, or a [[UsefulNotes/PeaceThroughSuperiorFirepower W61 nuclear warhead]].
210* The Russian-built Kaliber missile.
211* The South Korean Hyunmoo-3 cruise missile. The -3B and -3C versions have a similar capability to the TLAM.
212
213----
214!!Ballistic missiles
215
216As the name would imply, these missiles fly to their target in a ballistic arc, with some guidance based on their starting position to put them on the correct arc before they coast to the target. They are not nearly as accurate as cruise missiles but typically have much longer (intercontinental) range and much faster response time[[note]]A running [[GallowsHumor dark joke]] among nuclear missile operators being "delivery in 30 minutes or the second one's free!"[[/note]] and as such are today only carried by submarines and fitted with nuclear warheads. Each missile can be fitted with Multiple Independent Reentry Vehicles (MIRV) which are warheads that can hit several targets independently, and they can be fired while submerged. The job of [[UsefulNotes/TypesOfNavalShips [=SSBNs=] or "Boomers"]] are to hide until such time as they are ordered to fire these, and usually carry 1-2 dozen of them. [[TheEndOfTheWorldAsWeKnowIt Thankfully,]] no nuclear ballistic missiles have ever been fired in anger.\
217
218'''Examples''':
219
220* The US Trident II, carried by ''Ohio'' class [=SSBNs=].
221* The Russians currently operate the Bulava ballistic missile on its ''Borei'' class [=SSBNs=], and its last remaining ''Typhoon'', the latter as a test platform. The backbone, however, remains variants of the R-29 missile on its ''Delta'' class boats.
222* The French M45 and M51, carried by the ''Le Triomphant'' class.
223* The People's Republic of China are widely believed to be working on anti-ship ballistic missiles for use against US carrier groups. Since such a thing has never been attempted before, nobody knows how well it will work.
224* Though long retired, the Polaris missile is notable for the fact that the US and Italian navies both wanted to fire them from ''surface ships.''
225
226!!Unguided Rockets
227
228Similarly to ballistic missiles, but on a much smaller scale of both range and warhead, these are rockets that are fired from a ship in an unguided ballistic arc. Due to the way ships move up and down with the seas these are not very accurate and rarely employed against other ships. Instead they mostly serve in an shore bombardment role, where they can quickly saturate a large area with explosives. Ships with this sort of capability seem to come and go as the demand for shore bombardment rises and falls; For example, they were very popular in WWII, the Korean War, and Vietnam, but few ships today mount any sort of bombardment rockets. It helps that it's relatively easy to create a rocket bombardment ship quickly, by bolting or welding a large number of simple rocket launchers to the the deck of any available ship.
229
230----
231
232[[/folder]]
233
234[[folder:Subsurface weapons]]
235
236This category covers weapons that primarily function below the surface.
237
238----
239
240!!Heavyweight Torpedoes
241
242Essentially self-propelled underwater bombs, modern torpedoes have evolved quite a bit from the straight-running, short ranged weapons seen in UsefulNotes/WorldWarI and UsefulNotes/WorldWarII. The modern varieties come in two general types; heavyweight and lightweight. Heavyweight torpedoes are only carried by submarines, and can target subs or surface ships, while lightweight torpedoes are launched by aircraft and ships, but can only target submarines. We'll leave the lightweights for the anti-submarine section.\
243
244Heavyweight anti-ship torpedoes are truly fearsome weapons. Most have ranges in the dozens of miles, they can move at double the max speed of most ships and submarines, and due to their large size have bigger warheads than any other naval weapon (excluding nukes, of course--though there ''are'' nuclear-tipped torpedoes); many are capable of blowing cruiser-sized vessels ''clean in half''. Newer ones also have multiple guidance methods; they can be quietly guided by wires from the launching sub until a certain distance, but then use acoustic seekers, and their detonators can be magnetic. They are also very difficult to decoy.\
245
246'''Examples''':
247
248* The US Mk 48 ADCAP heavyweight torpedo is an exceptionally powerful anti-ship and anti-submarine weapon. It's also used by the Canadian, Australian, and Dutch navies.
249* The British Spearfish is a comparable weapon.
250* The Chinese Yu-6.
251* The German DM-53 heavyweight torpedo, with its superb fiber-optic guidance system
252* The Soviet/Russian Type 65-76 torpedo is the largest heavy torpedo ever deployed, with its [=DST92=] variant having an even larger warhead than the [=WW2=] Japanese Type 93 "Long Lance".
253
254----
255
256!!Lightweight Torpedoes
257
258While the heavyweight behemoths described above can also catch and destroy submarines (and are very good at it) they are typically too large and heavy to be carried by aircraft, and take up unnecessary space on surface ships. Lightweight torpedoes are about 1/3 as heavy and are still deadly weapons. They take a "just enough" approach to destroying submarines: they are shorter-ranged than heavyweights; they won't blow one in half, but instead are designed to cause a sufficiently large explosion sufficiently close to the submarine to crack its pressure hull, burst pipes, blind its sonar, and otherwise cause chaos within. Helicopters can usually carry two or three of these, surface ships these days usually have four to six of these ready to go (with plenty of extras in the magazines), and maritime patrol aircraft can carry sometimes as many as eight.\
259
260'''Examples''':
261
262* The US Mk 46 Mod 5 is a refinement of a design that has been around since the 60's.
263* The US Mk 54 is its intended replacement. It combines the warhead and sonar of the Mk 50 (the previous intended replacement of the Mk 46, until post-Cold War budget cuts made a torpedo more expensive than many of the submarines it would be fired at impossible to justify) with the body of the Mk 46.
264----
265!!Depth charges
266
267A depth charge is a bomb that is dropped in the water and set to detonate at a certain depth; either by pressure or by a timer. Their advantages are that they are cheap and simple to operate; their disadvantages are that they are very short ranged and unlike torpedoes, will not follow their targets around until they hit them. Also, during depth charge attacks, the attacker must pass over the submarine's location, at which point sonar contact is lost. The resulting explosions will also blind sonar, making it difficult to verify a target's destruction. \
268
269Depth charges were very common in UsefulNotes/WorldWarI and UsefulNotes/WorldWarII but few navies carry them today. Like lightweight torpedoes, these are not designed or intended for direct hits; near misses would be good enough. \
270
271----
272
273!!Anti-submarine mortar
274
275Anti-submarine mortars were devised in World War II, due to the ineffectiveness of depth charge attacks. These weapons launch explosives ahead of the ship, while there is still sonar contact with the target. The projectiles are equipped with contact fuzes, which detonate on impact, making them more effective at sinking submarines if a hit was scored, and since they only detonated on contact, an unsuccessful attack would not disrupt sonar contact as depth charges would. No longer widely used today, replaced with lightweight torpedoes and anti-submarine rockets and missiles.\
276
277'''Examples''':
278
279* The British Hedgehog and its successor, Limbo.
280----
281
282!!Anti-submarine rockets/missiles
283
284The successor to anti-submarine mortars, anti-submarine missiles and rockets function on the same principle as an anti-submarine mortar.\
285
286A rocket or a missile carries a lightweight torpedo or depth charge out some distance from the launching ship, and then drops it into the water, where it activates and acts like a normal torpedo or depth charge. Some are simply ballistic (rocket flies in an arc, drops torpedo) while others are guided. This is a good way for a surface ship to keep itself away from a sub. The one exception to this is when the "depth charge" carried by the rocket is actually a [[AtomicHate ''Nuclear Depth Bomb'']], in which case it will [[ThereIsNoKillLikeOverkill take out every submarine within a two mile radius or so of the impact point.]] Some such weapons offer (such as the original ASROC, and early depth charge rockets) only minimal increase in range over the torpedoes they carry, with the actual advantage being that they're much faster than the torpedo and drop in right on top of the submarine so that it'll have little time to evade.\
287
288'''Examples''':
289
290* The US RUR-5 ASROC ([=AntiSubmarineROCket=]) and its successor, the RUM-139 Vertically Launched ASROC (VLA) which has substantially increased range. Basically a Mk 46 torpedo with a rocket attached. The ASROC could also carry a [[UsefulNotes/PeaceThroughSuperiorFirepower Nuclear Depth Bomb]] in case the ship ran into ''serious'' submarine trouble. The original ASROC's range was actually shorter than the Mk 46 torpedo it carried, with the advantage being that it could rapidly drop that torpedo directly above a submarine and thus give much less chance of evasion. VLA on the other hand can actually fire on a submarine from outside the range of the sub's own torpedoes, which is a huge advantage ''if'' the submarine is detected that far out.
291* The Australian Ikara, now out of service. Mocked by submariners as standing for "[[FunWithAcronyms Insufficient Knowledge And Random Action]]", despite being significantly superior to the original ASROC on account of having double the range and being capable of mid-flight guidance.
292* The Russians (and Soviets before them) use the RBU-1000 and RBU-6000[[note]]So named for their 1000 and 6000 meter ranges, respectively[[/note]] multi-barrel rocket launchers. They are basically anti-submarine mortars with somewhat longer range. They remain in use largely because they take up so little deck space anyway, because the shallow yet cluttered waters of the Baltic Sea (a major Russian Navy operating area) can reduce sonar detection range to the point that such mortars are occasionally viable, and because they can be used as a last-ditch torpedo defense (fire the rockets in the direction of an incoming torpedo and hope for the best).
293* The Soviet Metel (SS-N-14 "Silex"), similar to the Ikara but larger and longer-ranged. Unknown to NATO until after the fall of the Soviet Union, there is also an anti-ship version, the "Rastrub". Still used for as long as they last, but no longer in production.
294* The Soviet/Russian RPK-2 Viyuga (SS-N-15 "Starfish") and RPK-6 Vodopad (SS-N-16 "Stallion") have largely replaced the Metel. These were originally submarine-launched weapons, but now are also used on surface ships by being launched into the water out of a ship's torpedo tubes, then popping back up to the surface and launching into the air, then flying to the target submarine and dropping a torpedo or [[NukeEm nuclear depth bomb]]. This might seem overly complicated, but it allows for the missiles to fired by any ship with standard Russian 533mm torpedo tubes, as opposed to needing the large deckspace-consuming launchers of the Metel.
295----
296
297!!Mines
298
299The reason why we have [[UsefulNotes/TypesOfNavalShips Minesweepers]]. [[SeaMine Mines]], like their land-based brethren, are bombs that sit inert until they are triggered by some external stimulus. There are literally hundreds of types of mines, and they are all deadly. Any seagoing vessel or aircraft can be a minelayer, and all ships and submarines are vulnerable (or, as the saying goes, [[GallowsHumor any ship can be a minesweeper once.]]) The best ways to categorize them are:
300
301* Position in the water
302** Free-floating
303** Moored at some fixed depth from the bottom
304** Resting on the bottom
305** Buried under the bottom
306** Attached to the enemy ship (a special category, called limpet mines, only deployable by some sort of specialized vehicle or diver and attached using magnets, adhesive, or drill)
307* Detonation mechanism
308** Contact (something touches the mine)
309** Acoustic (the sound of a specific ship)
310** Magnetic (the magnetic signature of a metal hull)
311** Pressure (the pressure of a ship or sub passing over them)
312** Timed (the mine detonates when its timer runs out)
313** Command (whoever laid the mine sends a signal to detonate)
314* Payload
315** High explosive warhead (the most common)
316** Nuclear warhead
317** Lightweight torpedo
318** Heavyweight torpedo
319
320The most insidious mines use a combination of the above; for example, there are mines that sit on the bottom, listen acoustically for a certain ship type, and then only float to the surface after a certain number have passed by, and only detonate when it gets the right magnetic signature to be sure it is close enough. \
321
322Incidentally, mines do not need to actually hit any ships to be effective; much like their land-based brethren, the mere knowledge (or rumor) that a minefield exists can serve as an effective deterrent and prevent hostile forces from entering an area. And if the enemy is determined to enter that area anyway, they must either accept that they're going to lose some ships to mines or they will have to tie up significant personnel and resources with mine clearance operations before they can bring in any other forces.\
323
324As an interesting bit of trivia, torpedoes are actually an offshoot of mines, with the original torpedoes being a type of sea mine named for an electric ray that would sting predators that came too close. Some clever wit decided to drag one of these behind a Torpedo Boat, and later someone decided to attach it to the [[RammingAlwaysWorks front of the boat]], before someone was finally clever enough to just leave the crew off and let the whole rig sail off at a target unattended, creating the [[AttackDrone Self-propelled Torpedo]]. More recently, things have come full circle with the CAPTOR ([=enCAPsulated=] [=TORpedo=]) mine, which is [[ExactlyWhatItSaysOnTheTin a mine containing a torpedo]]. When it detects a submarine within range that matches the acoustic profile of an enemy, it releases the torpedo.\
325
326Mines can be planted either by hand, by air, or by dedicated ships (minelayers). Some mines can also be deployed from submarine torpedo tubes.\
327
328----
329
330!!Paravanes
331
332Paravanes are winged objects towed behind ships. They were often used anti-mine warfare; the paravane's tow cable would snag a mine's anchor, allowing the paravane's fins to cut the wire, and causing the mine to surface, where it could then be destroyed, or else causing the mine to explode against the paravane. A variant was also used for anti-submarine warfare, with a warhead that would detonate once the paravane contacted the submarine's hull. No longer widely used for military applications.
333
334[[/folder]]
335
336[[folder:Naval Aircraft]]
337
338While not necessarily a weapon in and of themselves, the outer ring of air defense for a sufficiently large strike group will be formed by the carrier's air wing. Additionally, helicopters enable smaller ships to have a significant air presence throughout the fleet.\
339
340There are three standard methods for launching fixed-wing carrier-based aircraft. The most conventional is Catapult Assisted Take-Off But Arrested Recovery (CATOBAR), in which a steam catapult (or starting with the US ''Gerald R. Ford'' class, an electromagnetic catapult) is used to launch the aircraft, and on landing the aircraft must catch one of a set of arrestor wires with its tailhook. The second is Short Take-Off and Vertical Landing (STOVL), which dispenses with the need for catapults and wires but requires specialized aircraft that are usually lower in overall performance.[[note]]STOVL aircraft are almost invariably also capable of Vertical Take-Off and Landing (VTOL), but a short rolling takeoff allows them to carry a larger payload.[[/note]] The third is a hybrid of the other two, Short Take-Off But Arrested Recovery (STOBAR), which uses similar aircraft to CATOBAR but doesn't require heavy, expensive and maintenance-intensive catapults, at the cost of being unable to fling quite as much weight in fuel or weapons into the air.\
341
342The key difference for most naval aircraft is the ability to operate from ships, which leads to them having a number of features that are not needed on land:
343
344* Heavy anti-corrosion measures are necessary, or the planes would rust away just sitting in the sea air.
345* Carrier aircraft, and particularly their landing gear, need to be built heavily to survive the stresses of repeated carrier landings, which tend to be hard owing to the small amount of runway space available. This sometimes lowers their performance compared to their land-based peers which can eliminate or devote weight to other things.
346* Aircraft operating from CATOBAR carriers need to be built for for being pulled by their landing gear, as well as stopped by tailhooks.
347* Shipborne aircraft must have built-in hard points for attaching tiedown chains which prevent them from rolling or sliding around on deck as the ship pitches and rolls.
348* Radio and other communications and navigation equipment has always been more important for naval aircraft than land-based ones as both the aircraft and their base are moving around, and the sea is largely a featureless void most of the time. Without stable comms it might be impossible to find the ship again after a mission.
349* There is an upper limit on the size of any aircraft that can operate from a ship. This is due to the limited space for launching and landing. There have been cases where large land-based aircraft were launched and landed back aboard ships, but these have mostly been either for experiments, publicity stunts, or one-off special missions, and usually required significant modifications from the norm to the ships, aircraft, and/or launching and landing procedures to pull off.
350* Even on large modern carriers, naval aircraft tend to be built with compact parking and storage in mind. Folding wings, rotors, and even fuselages are popular, and some naval aircraft were designed with ease of disassembly and reassembly in mind. This is so that you can [[ClownCarBase maximize the number of aircraft a given type of ship can carry]].
351* Naval aircraft of course frequently have to be designed for specific types of naval weaponry and sensors that are not used on land, depending on the era. These include air-launched torpedoes, armor-piercing bombs, depth charges, naval mines, anti-ship missiles, sonobouys, dipping sonar, and Magnetic Anomaly Detection equipment, in addition to various ground-attack and air-to-air munitions. This also means accommodation for the crew who have to operate that equipment.
352* Survival equipment ([[WeHaveReserves when issued]]) for naval aircraft always has the sea in mind, and include things like life vests, inflatable rafts, and dye marker packs.
353* Historically, paint jobs have also been different. It's been common to paint the top side of the aircraft blue or a similar dark color that blends with the sea, and the bottom white or another light color that blends with the sky. Later as visual camouflage became less important, they have tended to use all-gray color schemes similar to their land-based counterparts.
354
355!!Fighters and Interceptors
356These aircraft are there to provide long-range and close defense against enemy aircraft, and in more modern settings, against incoming missiles. From the dawn of aviation until the 1960s-1980s, these were gunfighters, using machine guns or canon to dogfight their opposite numbers and hunt down bombers and others. As missile technology improved, air-to-air missiles became the primary weapon with guns moving into a secondary role.\
357
358As one might suspect, regardless of era and primary weaponry they tend to be fast and highly maneuverable in order to gain the upper hand against enemy aircraft. Because their primary job is defense, they often operate in a "ready" mode, sitting on deck and able to "scramble" and launch at a moment's notice, or in a Combat Air Patrol (CAP) or Defensive Counter Air (DCA) mode, where flights of aircraft are rotated in order to continuously keep patrols in the air to intercept threats before they can get to the carrier and her escorts. They also accompany other aircraft on strike missions as escorts and conduct Offensive Counter-Air (OCA) missions, sweeping the sky for enemy aircraft. As precision-guided weapons improved in the late 20th and early 21st centuries, they began to significantly overlap with the bombers and attack aircraft described below, and these days the two roles tend to be combined into "fighter-bomber" or "strike fighter" designs.\
359
360'''Examples''':
361
362* The F-14 Tomcat of ''Film/TopGun'' fame was considered the most powerful naval fighter of its day. It is now retired from US service with a few hanging around in Iran. Where they're used on land due to the lack of carriers, and not actually used that much at all which is why they're not too worn out to fly like the American ones. Its AIM-54 Phoenix missile was the longest-range air-to-air weapon ever deployed, able to reach out and touch someone upwards of 100 nautical miles (190 km) away, but [[TooAwesomeToUse they were almost never used outside of tests due to being so expensive]].
363* Its replacement, the F/A-18C Hornet and especially the enlarged F/A-18E and F Super Hornet, is a "strike fighter" which can attack surface or air targets. Detractors have argued that it was never as good a fighter as the F-14 was, but because [[BoringButPractical it does it's job well enough]] ''and'' [[JackOfAllTrades can do several jobs]] [[CripplingOverspecialization that the F-14 was never suited for]] the US Navy and several international militaries are very happy with it and use many of them.
364* The F-35C Lightning II, which has greater range and payload than the B-variant described under attack aircraft below, omits the lift fan of it's STOVL sibling and is a dedicated carrier aircraft. It is a stealthier "strike fighter" meant to supplement the F/A-18E and F variants.
365* The Japanese [=A6M=] Zero or [[ReportingNames "Zeke"]] was a famously effective carrier fighter of the Pacific Theater of World War II.
366* The Zero's primary antagonists were the US Navy's [=F4F=] Wildcat and its partial replacement the [=F6F=] Hellcat. They were in turn succeeded by the [=F8F=] Bearcat, which turned out to be the last propeller-driven fighter of the US Navy.
367* The US Navy's [=F4U=] Corsair was designed as a carrier fighter, but proved to have significant problems with carrier operations, and so gained most of its fame in World War II while being operated from land bases by the US Marine Corps.
368* The US F-8 Crusader was one of the last naval aircraft designed primarily for dogfighting with guns, and so was often known as "The Last Gunfighter". F-8 pilots derisive of their peers flying missile-specialized aircraft also had the slogan "When you're out of F-8's, you're out of fighters."
369* The F-4 Phantom II was one of the first fighter-bombers ''and'' one of the first carrier fighters designed primarily for missile combat. The US Navy and Marine Corps used the A, B, N, and S versions, and the Royal Navy used the K variant. Its combat record against the North Vietnamese Air Force led to it being nicknamed "The World's Leading Distributor of [=MiG=] Parts", along with many other [[FanNickname flattering and unflattering names]].
370* The French Navy, being the only other one with a modern catapult-equipped aircraft carrier, uses the Dassault Rafale M. It lies somewhere between the standard F/A-18 and the Super Hornet in payload but is stealthier than either of them.
371* Russia, China and India also use carriers with a "ski jump", but a steeper one than normally used for STOVL aircraft. Instead they use STOBAR aircraft, which are adapted from the Sukhoi Su-27 "Flanker" and Mikoyan [=MiG=]-29 "Fulcrum" land-based fighters.
372
373
374!!Torpedo Bombers
375Designed around the use of air-launched heavyweight torpedoes, these were a major anti-ship threat from the beginning of naval aviation until the advent of anti-ship missiles in the 1950s. Some were operated by land-based air forces and armies, but no self-respecting carrier-operating navy of the era was without them. Torpedo bombing was one of the most dangerous missions in naval aviation, both for the ships being attacked, as the torpedoes tended to have enormous warheads, and for the torpedo bomber crews themselves, as a successful attack required the aircraft to fly low, slow, at close range, and in a straight line directly at an enemy ship and its air defenses. After World War II these aircraft disappeared and their anti-shipping role was taken over by attack aircraft with anti-ship missiles and guided bombs, which could be launched more safely from much further away and much higher altitude.\
376
377'''Examples''':
378
379* The US Navy started World War II with the Douglas TBD Destroyer. While it performed well enough early on in the war, it was a mid-1930s design that was hopelessly outclassed by the Japanese fighters trying to stop it. The devastating loss of 41 out of 47 [=TBDs=] with zero damaging torpedo hits to show for it at the Battle of Midway led the USN to pull it from service, and it was replaced by...
380* The Grumman TBF/TBM Avenger. Although the Avenger also took terrible losses at Midway (5 out of 6 lost, no hits) it went on to be the most successful US torpedo bomber of the war, and it's versatility led to its uses in other bombing roles, and even as a firefighting aircraft after the war.
381* The primary Japanese torpedo bomber in World War II was the Nakajima [=B5N=] "Kate". It was successful in the first half of the war, but as with the TBD, it proved to have significant weaknesses, and it was replaced by...
382* The Nakajima [=B6N=] "Jill". Although a fairly powerful torpedo bomber, it's late introduction during World War II meant that the Imperial Japanese Navy had already exhausted its supply of well-trained aircrew and was facing significant material shortages, and so it never lived up to its full potential.
383* The Royal Navy's Fairy Swordfish torpedo bomber famously achieved the damaging torpedo hit that disabled the German battleship Bismarck's rudder and enabled her destruction the next day, despite being hopelessly out of date and flying in terrible weather conditions.
384
385!!Dive Bombers
386Before guided weaponry existed, bombing was notoriously inaccurate. Heavy bombers could carry many bombs, but flying at the high altitude necessary to avoid air defenses meant that the odds of directly hitting a particular target were extremely low. Over land this could be compensated for by using large groups of bombers, flying in formation, and releasing bombs in sequence to cover a large area with bombs, a technique known as "carpet bombing" or "saturation bombing". However this tactic was never very effective at sea, as ships would simply maneuver radically as soon as bombs began falling and easily avoid the target area.\
387
388However, if a pilot flew an aircraft in a steep dive and aimed the whole plane at the target, then released the bomb(s) at the last possible second, it was possible to reliably hit ships which were evading wildly, especially with a coordinated attack by several bombers. Thus, naval air forces in the 1920s and 30s began to commission specially designed dive bombers, mirroring the same development by ground-based air forces trying to target small vehicles. Contrary to the popular image of bombers these were smaller, high-performance aircraft specialized for maneuverability. They often carried specialized features such as dive brakes to stabilize and slow the dive so the pilot had time to aim, armor-piercing bombs to penetrate capital ship deck armor, specialized bomb-release equipment to prevent the plane and bomb from colliding, and automatic controls to help the pilot pull out of the dive before crashing into the sea. As with torpedo bombers, these became obsolete after World War II with the advent of missiles and other precision-guided weaponry.\
389
390'''Examples''':
391
392* The US SBD Dauntless, which famously achieved the hits that sank four Japanese aircraft carriers at the Battle of Midway in 1942.
393* The Imperial Japanese Aichi [=D3A=] "Val" conducted the attack on Pearl Harbor and accounted for the destruction of more allied ships than any other axis aircraft of the war.
394* The British Skua.
395* The US [=SB2C=] Helldiver was an attempt to combine the roles of torpedo bomber and dive bomber into the same aircraft. Although it had numerous performance problems at its initial rollout[[note]]these problems were bad enough that crews would sometimes say that [=SB2C=] actually stood for "Son of a Bitch, 2nd Class"[[/note]], those were eventually fixed and it largely replaced both the SBD and the TBM/TBF by the end of the war.
396
397!!Attack Aircraft
398Aircraft intended for low-level attack of small targets with somewhat more precision than your typical medium or heavy bomber. There were dedicated attack aircraft in armies and air forces prior to World War II, but navies generally did not use them, instead preferring dive or torpedo bombers in an anti-ship role. During World War II this role was generally performed against land targets by dive bombers or modified fighter aircraft, but after the war aircraft dedicated to this role were created, and they largely replaced dive and torpedo bombers in the 1950s. The proliferation of precision-guided munitions in the 1980s and 90s meant that fewer munitions were needed to destroy any particular target and thus aircraft maneuvering performance no longer needed to be sacrificed in order to boost payload capacity. The increased range of precision-guided munitions also meant the plane deploying them didn't need to get very close to the target anymore, so maneuverability and survivability at low altitude and speed was no longer really necessary. As a result, dedicated attack aircraft have largely been replaced by hybrid fighter-bombers or strike fighters. \
399
400'''Examples''':
401
402* The US A-6 Intruder was a heavier attack aircraft of the Cold War and saw extensive action in the Vietnam war, not retiring until the mid 1990s.
403* The A-4 Skyhawk was a lighter attack aircraft of the same era, that remains in service to this day in some non-US navies.
404* The A-1 Skyraider was the US Navy's last piston-engine driven attack aircraft, used starting in the 1940s all the way through to the 1980s. As it appeared quite anachronistic among the modern jets then in use, it was often referred to as "The Spad", referencing a French-built biplane used by the US in World War I.
405* The US Marine Corps and most non-US navies with a fixed wing capability tend to use aircraft with STOVL capability, as it allows for real fighter-bombers to fly off of a smaller carrier without expensive catapults and arresting gear. The most famous sea-borne STOVL aircraft is the Harrier, originally developed by the British, then later refined by a joint US-British effort and exported around the world. Often their carriers have a "ski jump" ramp at the front of the flight deck, which allows Harriers (and any future STOVL aircraft) to take off with a larger payload.
406** There are actually three distinct Harrier airframes. The original British Harrier was the most primitive of the three, and the only naval users were the US Marine Corps (designated AV-8A), the Spanish Navy and the Royal Thai Navy (with hand-me-down Spanish Harriers), all of whom have retired them. The next was the Sea Harrier, a navalized and considerably improved version that was equipped with radar so that the Royal Navy, having retired all its CATOBAR carriers, could still have fighter support. These were also the fastest Harriers, and were later given the excellent Blue Vixen radar allowing them to fire AMRAAM missiles. Due to budget cuts they were prematurely retired by the Royal Navy before the F-35 was available to replace them. The only other operator is the Indian Navy. The final version is the Anglo-American Harrier II (AV-8B in US service), which has a larger airframe and a correspondingly more powerful engine, giving it superior payload and range. These are used by the Marines and the Spanish and Italian Navies, and some RAF Harrier [=IIs=] were transferred to the Royal Navy as a stopgap replacement for the retired Sea Harriers. Some Marine Corps, Spanish and Italian Harrier [=IIs=] have been upgraded to the AV-8B Plus, which gives them APG-65 radars removed from F/A-18C Hornets when the latter got better ones installed, allowing the Harriers to use AMRAAM. A proposal to similarly upgrade British Harrier [=IIs=] with the Blue Vixen radars from the retired Sea Harriers, but this was rejected as too expensive.
407** Its replacement is the STOVL variant of the F-35 Lightning II (the F-35B), which was developed by an international effort led by the US and UK. Because the F-35B can carry a larger payload than the Harrier, it's unsafe to land it vertically while fully loaded; to avoid the wasteful dropping of unused weapons (which tend to be expensive) before landing, a technique has been developed to use thrust vectoring to slow the aircraft down enough that it can come to a rolling stop without the need for arresting gear.
408
409!!Electronic Warfare Aircraft
410EW aircraft provide support to strike and fighter aircraft by disrupting the enemy's ability to make use of the electromagnetic spectrum, particularly by jamming enemy radars or destroying enemy surface-based radar sites.\
411
412'''Examples''':
413
414* The EA-6B Prowler was a "stretched" variant of the A-6 Intruder designed for electronic warfare.
415* The EA-18G Growler is a dedicated jamming aircraft built into the Super Hornet airframe, which interestingly gives fighter-like performance to a role historically performed by less-maneuverable attack airframes. Often borrowed by the Air Force, who retired their dedicated jammers over a decade ago.
416
417!!Airborne Early Warning and Control Aircraft
418These planes carry large radars and comprehensive communications suites, in order to look out much further than the ships' radars can see, detect threats before they are close enough to attack the fleet, and then vector other aircraft in to deal with the threat. Any plane with a radar can perform the role, including helicopters, but dedicated aircraft are much more efficient at it. Sometimes called "the eyes of the fleet".\
419
420'''Examples''':
421
422* The US E-1 Tracer was one of the first purpose-built carrier-capable AEWC aircraft.
423* The US E-2C (and updated variant E-2D) Hawkeye provides long-range radar coverage and provides direction to a carrier's aircraft, or indeed any friendly aircraft or ships in the area. It's also been exported to several other countries, as it's smaller, easier to maintain, and cheaper than the converted airliners often used by land-based air forces for the same role.
424* Having retired all of its full-length carriers by the 1980s, and having identified that one of their major weaknesses during the UsefulNotes/FalklandsWar was a lack of adequate early warning, the UK developed a series of AEWC versions of the Westland Sea King helicopter known as the AEW.2, AEW.5, and [=ASaC7=]. These are significantly less capable than fixed-wing AEW when it comes to detecting enemy aircraft (as a helicopter can't fly nearly as high and can't carry as large a radar), but they still work quite well for detecting sea-skimming missiles.
425
426!!Maritime Patrol and Anti-Submarine Aircraft
427[=MPAs=] are dedicated to patrolling large areas of water, reporting what they see there to other ships and land bases, and possibly then attacking what they find. Although they will report (and attack) surface vessels, they are generally specialized for antisubmarine warfare. Unlike most naval aircraft, it's very common to find land-based aircraft and helicopters in this category; land based [=MPAs=] are often repurposed airliners, for their extended ranges. Until the 1950s, seaplanes were also very popular for this task, but it was found to be impractical to build jet-powered seaplanes and they have not been seriously considered since.\
428
429'''Examples''':
430
431* The S-2 Tracker was the first purpose-built anti-submarine aircraft of the US Navy.
432* The S-3 Viking was a jet-powered aircraft designed as a replacement for the S-2.
433* The SH-60 Seahawk helicopter comes in several flavors, of which the SH-60B, SH-60F, and MH-60R variants are designed for anti-submarine and anti-surface warfare. The HH-60H and MH-60S are meant for general purpose transportation, search and rescue, and special forces support, but can also be used for limited anti-surface ship work.
434* Many navies without any other air capability will at least have some helicopters for anti-submarine, anti-surface, and general purpose work. It helps that they can land on pretty much any ship with a decent amount of flat deck space.
435* The P-3 Orion is a land-based aircraft with enough range and endurance on-station that it can support fleet operations far from shore. It's replacement, the P-8 Neptune, is based on an Boeing 737 airliner.
436* One of the more famous [=MPAs=] of World War II was the PBY Catalina, a seaplane.
437
438!!Carrier Onboard Delivery
439[=CODs=] are cargo aircraft that are also carrier capable, that can ferry people and supplies back and forth between the carrier and shore or other carriers. Helicopters can also be used for this role, albeit typically with shorter range and smaller payloads.\
440
441'''Examples''':
442
443* The C-1 Trader was a cargo variant of the S-2 Tracker, and the E-1 Tracer was in turn derived from it.
444* As with the C-1, the C-2A Greyhound is a close sibling of the E-2C and the USN's current COD.
445* The C-2A has been supplemented by the CMV-22B Osprey, a tilt-rotor VTOL transport which (due to being able to take of and land vertically) can deliver cargo not only to carriers, but also amphibious assault ships, or even destroyers and frigates so long as they have an an approximately 30x30 meter flight deck.
446
447!!Observation and Reconnaissance Aircraft
448[[ExactlyWhatItSaysOnTheTin These planes are designed to conduct reconnaissance and observe the enemy.]] There are a few major subtypes of naval planes here that should be noted.\
449
450First, there were spotter aircraft deployed from battleships and cruisers. These were the original form of naval air power, and were meant to make the big guns of the fleet more accurate by spotting where the shells landed relative to enemy ships, and sending back corrections. They were almost exclusively seaplanes as the ships they were launched from did not have the deck space to land on that a carrier might. They largely went away with the advent of radar, but were common in most major navies from the invention of powered flight until the end of the 1940s.\
451
452Second, there were scout-bombers and fighters. Usually these were aircraft meant for other roles, but stripped down to increase range and fitted with improved communications equipment. Often they carried some armament for opportunistic attacks but not as much as a dedicated fighter or bomber.\
453
454Finally, there are dedicated reconnaissance aircraft which take pictures of and/or gather electronic intelligence from enemy shores. Often these are converted fighters, bombers, or maritime patrol aircraft.\
455
456'''Examples''':
457
458* The [=OS2U=] Kingfisher was a battleship and cruiser based seaplane spotter aircraft of the US Navy.
459* The US Navy operated dedicated scout-bomber squadrons in the interwar period and during WWII, most notably using the SBD Dauntless. Interestingly, there was no actual difference in airframe from the planes operated by dedicated dive bombing squadrons. The scout-bombers simply carried a lighter bomb load in order to facilitate loading more fuel to extend their range, and prioritized gathering information over destroying ships.
460* The F-4 Phantom II had a photo-reconnaissance version that frequently flew from carriers during the Vietnam War.
461
462----
463
464[[/folder]]
465
466
467[[folder:Electronics and sensors]]
468
469This category covers electronic and sensor systems used to enhance a ship's combat capabilities.
470----
471
472!!Visual Sensors
473
474The original naval sensor was naturally the [[ExpospeakGag "Mark I Mod 0 Eyeball"]], but ever since the idea of a telescope came about in the 1600s, people have been looking at ways to improve on that. Modern optical sensors often come with myriad of useful features, such as very high magnification, automatic stabilization systems, night vision, thermal vision, and automatic tracking of targets. Even with all these advancements, however, the use of common, inexpensive binoculars is still practiced by all navies for navigation and observation.
475
476----
477
478!!Rangefinders
479
480One of the hardest problems in early naval gunnery was the problem of determining the range to target. The angle of the target is easy to figure out, and it's relative speed laterally to the firing ship is relatively easy to calculate by measuring the change in it's angle, so you can figure out the lead required. But figuring out how far away it is was very difficult to do; and during combat it often boiled down to firing a salvo, observing the splashes produced, and then adjusting and trying again until a hit was achieved. This is obviously inefficient and also gives the enemy the opportunity to evade. Every time the range changed significantly, you needed to start the process over again; so usually what would happen is that you'd have to close with the enemy until the range so short that it was impossible to miss, exposing yourself to enemy fire in turn.\
481
482Optical rangefinders were the first attempt to solve this problem; basically a series of lenses and mirrors were arranged in such a way that two images of a target were produced from two different angles, and then those images compared such that with a little trigonometry a range could be calculated. This worked alright, but these systems were large, heavy, complicated, fragile, and expensive, so they would often only be found on the largest ships. Even then, they could be subject to significant error, so some trial and error shooting was still required for an accurate range. The ship that "found the range" first would then relay that information to the rest of her fleet so they could all zero in on that target.\
483
484Radar, as discussed below, largely solved the ranging problem, but there are still situations in which radar is less useful, particularly against small or stealthy targets that don't show up on radar well, or when you don't want to give your presence away by radiating a radar signal. Lasers were invented in the 1960s and make a handy rangefinder, by shining a laser on the target and timing how long it takes the beam's reflection to return. There are handheld versions, but also optical sensors often have laser rangefinders packaged with them, allowing an operator to see exactly how far away anything they are looking at is, and then relay that information to fire control systems.
485
486----
487
488!!Radar[[note]]Originally an acronym for [=RADio=] navigation And Ranging[[/note]]
489
490Radar was invented just prior to UsefulNotes/WorldWarII and its development revolutionized naval warfare. Radar works by sending a radio wave out, waiting for a reflection of that wave off a solid object to return, and then measuring the time the round trip took. Knowing the speed of the radio wave, you can easily calculate the distance it covered. Not only did the invention of radar neatly solve the ranging problem, it also allowed targets to be accurately be detected and tracked well beyond the range they could be seen at, at night, and through smoke and fog. Modern radars can be generally divided up by what function they are designed for. Bear in mind, if you have a capable enough radar (and enough money to afford it) you can often combine some or all of these functions into one system:
491
492!!!Air Search Radars
493
494These radars are optimized for detecting and tracking flying objects, particularly aircraft and missiles. The range they can find airplanes at depends on how much power they can put out, and is limited by curvature of the earth, and so they tend to be mounted very high up on the ship and consume enormous amounts of power; usually they are the single largest consumer of electrical power on any ship they are mounted on. Since aircraft tend to move very quickly compared to ships, and missiles are a huge threat to ships, they also have the ability to detect track very fast and small objects. Modern phased-array radars can track dozens of targets simultaneously at very long ranges.\
495
496'''Examples:'''
497* The US SPY-1 and its variants is currently the gold standard of shipboard air search radars, capable of simultaneously detecting and tracking hundreds of targets at extreme range, even up into space.
498
499!!!Surface Search Radars
500
501Surface search radars are designed to look for objects close to the surface of the sea. As ships tend to move more slowly than aircraft, they do not have the same tracking speed as air search radars, but tend to be much smaller, lighter, and cheaper. They are relatively short-ranged mainly because the curvature of the earth gets in the way of seeing objects low to the water, and so tend to use less power as it's not necessary to look so far away. Some surface search radars are further specialized for anti-submarine warfare, being designed to look for small objects very close to the water, like periscopes.
502
503!!!Fire Control Radars
504
505These radars are designed specifically for getting highly accurate information about a target's range, bearing, course, speed, and (sometimes) altitude, and then passing that information to a gun or missile system. Sometimes, particularly with gun systems, they are also designed to track the ''outgoing projectiles'' and any splashes they produce as well, so that they can see how much the last salvo missed by and adjust fire for the next shot. Often these have a very narrow field of view, so the target must be first detected by a search radar and then its location "handed off" to the fire control radar. Laser-based systems, as described above, can also serve this purpose, usually for short ranged guns that can't fire over the horizon anyway. \
506
507Many ships and aircraft have warning systems that will detect these signals and tell operators that they are being targeted by a fire control radar, leading to an entertaining secondary use for these systems as a psychological warfare tool: if those alarms are going off, someone may be trying to kill you, and perhaps you should leave the area now! However, operators must also bear in mind that doing this to someone is generally considered impolite and provocative during peacetime and depending on the country, the reply might be in the form of weapons fire or a ''declaration of war''.
508
509!!!Navigation Radars
510
511Radar can also be used to find one's bearings, by checking distances and angular bearings to land or known objects or aids. Most large watercraft today mount some kind of navigation radar, and warships are no exception. Often surface search radars are handy for navigation as well.
512
513----
514
515!!Sonar[[note]]Originally an acronym for [=SOund=] Navigation And Ranging[[/note]]
516
517Sonar is the primary sensor used by submarines, and an important secondary sensor for surface ships and aircraft. Sonar uses sound waves instead of radio waves to detect ships and submarines. It is much less precise and consistent than radar due to the nature of the ocean environment and sound compared to the atmosphere and radio, but it can also convey more information about the target than radar. It comes in two main flavors:
518
519!!!Active Sonar
520
521Active sonar works exactly like radar does, but using sound instead of radio: very powerful and large transducers[[note]]underwater speakers[[/note]] broadcast a loud "ping" noise into the water, and then sensitive hydrophones[[note]]underwater microphones[[/note]] listen for echoes and time how long it takes them to get back. Knowledge of water conditions is then used to calculate the local underwater speed of sound, and a bearing and range to target can be determined. After enough pings, you can also calculate the target's course, speed, and depth. Active sonar can also be used to find the depth of the water, and to detect ice or mines.\
522
523Nearly all submarines, and any surface ship designed for antisubmarine warfare, have an active sonar system installed, but most navies are very cautious in their use of it, as the very ping it produces both gives away your general position and instantly identifies you as vessel designed for undersea warfare. Since it's much harder to make a surface ship stealthy in the first place, they are much more likely to "go active" than submarines, who will likely only do so if they are convinced they've already been detected anyway.\
524
525Active sonar is usually mounted on the ship or submarine's hull amidships or on the bow, but can also be mounted on a towed or variable-depth array as described below, or even on a cable dangling from a helicopter, which is usually called a "dipping sonar". Getting it away from the ship's self-noise is not as big a deal with active sonar compared with passive since the pings emitted are in the hundreds of decibels and the echos can usually drown out the ship itself at any kind of realistic detection range. \
526
527Although its primary purpose is as a sensor, active sonar ''can'' also be used as a weapon; the pings emitted are so loud, and water so conducive to transferring pressure waves, that any person or animal in the water near the ship while it is pinging is at serious risk of injury or death due to ''their internal organs vibrating and compressing''. Navies can thus take advantage of this as a defense against swimmers and divers; though more environmentally-conscious navies will also take measures to try not to kill the local wildlife with it, particularly whales and dolphins.
528
529!!!Passive Sonar
530
531Passive sonar works by simply listening to the water with hydrophones, observing the direction the sound is coming from, and analyzing its frequency and other characteristics. This is of course much stealthier than active sonar, and can give you a lot of information about whatever you are listening to; skilled sonar operators can readily identify a ship's class by how it sounds and what frequencies it produces, and can sometimes even identify individual ships within a class and ''what equipment they have running''. However, it has one key drawback compared to active sonar: it won't tell you the range to the target, and thus it also won't give you data about its course and speed. It is possible to get an estimate of the range using a technique called Target Motion Analysis, but this takes an extended period of time and is not very precise. Passive sonar further subdivides into:
532
533* Hull-mounted sonar, which is hardy and convenient, but less sensitive and more likely to be drowned out by the sound of the vessel it is attached to, particularly if the ship is going fast.
534* Towed-array sonar, which is towed in a long array that looks like a very thick cable, well behind the ship or submarine. It is much more sensitive and less vulnerable to one's own noise, but is also more fragile and may restrict maneuvering. The depth of the array also changes whenever the ship changes speed (the faster you go, the shallower it gets). This makes it harder to use in shallow water, since if you slow down enough to hear things over your own self-noise, the array may droop into the bottom.
535* Variable-depth sonar, which is mounted on a pod or sled, towed behind the ship, and has fins which can be controlled from the towing ship to allow you to place it at whatever depth is convenient while maintaining an optimal speed through the water. It has most of the advantages of a towed array and eliminates the depth-control drawback, at the price of added expense, more complicated maintenance and repairs, and a higher likelihood of it being broken.
536
537----
538
539!!Sonobouys
540
541Sonobouys are an important part of hunting submarines. They are basically disposable buoys with small sonar systems hanging underneath them, underwater, that can be launched by aircraft or thrown over the side by surface ships. The acoustic data they gather is then transmitted back to the parent ship or aircraft, effectively providing the originator with the ability to listen in more than one place at the same time. Some sonobuoys use active sonar, while others use passive sonar only; most anti-submarine aircraft carry some of both types. Sonobuoys have become less popular after the end of the Cold War, because reduced budgets make a single-use buoy less attractive than an infinitely reusable dipping sonar on a helicopter. But they remain the only reasonable way for a fixed-wing aircraft to put sonar in the water.
542
543----
544
545!!Magnetic anomaly detectors (MAD)
546
547Magnetic anomaly detectors are used to detect a submarine's metallic profile, by using the earth's magnetic field as a baseline and then detecting the distortion created by a large metallic object where one is not expected to be. They can be carried by ships or aircraft (to avoid their own magnetic field interfering with its function, they are typically towed or in the case of aircraft, mounted away from the aircraft's body). They are more effective against submarines at a shallow depth, due to their short range, and can be confused by wrecks or uncharted masses of ore.
548
549----
550
551!!Electronic Warfare suites
552
553There are whole books written on this topic, but for the purposes of this article, this is basically warships listening for enemy radars or broadcasting jamming to confuse enemy sensors. This can allow you to detect enemy ships long before they can pick you up on radar (by its very nature, to get a radar return, the signal needs to go from the transmitter to the target and back; the emitter has to have enough power to send signals double its maximum range). If your own emitters are turned off, you can then track them without needing your own radar. You can use common civilian radars to fool the enemy into thinking you are a merchant vessel. EW plays a key role in defense against [=ASCMs=]; detecting the missile's radar seeker may provide you more warning than your own radars, and you may be able to jam its seeker and confuse it. Most modern combatants mount some sort of EW system.
554
555!!!Jammers
556
557A jammer is similar to a radar, but instead of sending out a signal and listening for echoes, it blasts electromagnetic "noise" over the frequencies used by enemy sensors in order to generate false targets, make the range to target impossible to determine, or simply drown out all echoes and effectively "blind" the enemy radar. This does make it much harder for the enemy to target you, but does also make it rather obvious that there is a warship or warplane in the area, as civilian vessels don't carry jammers, so it's not a great idea to use them if stealth is important.
558
559!!!Radio Direction Finders
560
561These simply tell you which direction a radio signal is coming from. By using several of them on different vessels, and then comparing what direction they see the signal coming from, you can triangulate the position of the transmitter, without using your own radar. These were used heavily in World War II to find German submarines and are still relevant today for finding anything with a radar or radio.
562
563----
564
565!!Stealth design
566
567One way to avoid getting hit by missiles is to avoid being detected at all. New warships are now being designed so that their radar-cross section[[note]]the measure of how much of the radar signal is actually reflected back to the receiver[[/note]] is reduced, making it harder to detect them initially and then harder for missiles to lock on. This started in the US in the 1980s but the practice has now become commonplace around the world. Generally it involves eliminating right angles, using radar-absorbent composite materials, and clearing away or concealing objects sticking out on deck and on the sides of the ship. This also has the added benefit of making the ships look more sleek, deadly and futuristic without all that ungainly, random crap like radars, antennas and deck fixtures sticking out. \
568
569* For an example of the progression stealth ship design has undergone, examine the shapes of five US warships from the last 30 years:
570** The [[http://en.wikipedia.org/wiki/File:USS_Deyo_(DD-989).jpg ''Spruance'' Class destroyers]] were built in the 1970s and 80s, before the advent of stealth features for ships. Note the slab-sided superstructure with right angles everywhere.
571** The [[http://en.wikipedia.org/wiki/File:US_Navy_030903-N-5024R-003_USS_Port_Royal_(DDG_73)_departed_on_deployment.jpg ''Ticonderoga'' Class cruisers]] were originally designed without stealth design (and use the same hull as the ''Spruance'' class), but some features were later added to improve it, such as radar absorbent material.
572** The [[http://en.wikipedia.org/wiki/File:USS_Momsen_(DDG_92)_stbd_bow_view.jpg ''Arleigh Burke'' Class destroyers]] were the first US ships built from the beginning to be stealthier; note the lack of prominent right angles and the major reduction of topside clutter. This is probably as stealthy as an air defense escort ship ''needs'' to be, since the aircraft carrier it's accompanying will inherently be about as stealthy as Mt Everest.
573** The [[http://en.wikipedia.org/wiki/File:LPD-17_Class.jpg ''San Antonio'' class amphibious assault ships]] represent the latest in stealth design; you can see how all most all of the antennas and protrusions topside are either missing or hidden inside the two large masts. Even the anchor is hidden from any angle a radar might see it from.
574** And then we have the [[http://en.wikipedia.org/wiki/File:Uss_Zumwalt.jpg Zumwalt class]] destroyers. Note the even more dramatic absence of protrusions and random clutter, turrets into which the gun barrels are retracted when not in use, and the unconventional hull shape which is much stealthier but also less stable in rough seas. This design may also someday include a [[https://tvtropes.org/pmwiki/pmwiki.php/Main/MagneticWeapons railgun]], which will need even more clever engineering to conceal.
575* The French ''[[https://en.wikipedia.org/wiki/La_Fayette-class_frigate La Fayette]]''-class frigate was the codifier of the stealth ship concept, featuring a clean profile with angled, flush sides and construction from radar-absorbent composites.
576* The Swedish ''[[https://en.wikipedia.org/wiki/Visby-class_corvette Visby]]''-class corvette, similarly to the ''Zumwalt'', heavily emphasizes stealth design, made from composite materials, and with a retractable gun barrel.
577
578Drawbacks to dedicated stealth designs include the high cost and lower resilience of dedicated composites (though newer designs are much better), limited deck space and internal volume and, in the case of the Zumwalt, a hull form with a history of instability problems - all of which would conspire to make such ships very hard to upgrade. At the same time, modern integrated sensor networks are causing naval theorists to question the very notion that naval stealth is possible at all (except in the form of submarines).
579
580----
581
582!!Searchlights
583
584Searchlights were used in night combat to illuminate opposing vessels so that the gunners could aim. This came at the cost of making the light source an obvious target. They were used in this role from the dawn of shipboard electricity until the advent of reliable radar; these days searchlights are mainly used for search and rescue and general purpose night illumination, not as a fire control system.
585
586----
587
588!!Illuminators and Designators
589These devices are used to designate a target for a guided weapon system. They emit a strong source of energy to "illuminate" the target and provide a strong reflection for the weapon to "see" and home in on; in some ways, they are basically more advanced searchlights. Lasers are commonly used in this role for air-to-surface bombs and missiles, and radio transmitters are commonly used as illuminators for surface-to-air missiles. Often the radio version is mistaken by observers as a radar, since the antennae are very similar, except illuminators do not have equipment to receive signals, only to send. They are the source of the phrase "laser-guided" when taken to mean "precise and accurate".
590
591[[/folder]]
592
593[[folder:Countermeasures]]
594
595Countermeasures are systems that actively attempt to defeat or destroy enemy weapon systems.
596----
597
598!!Ballistic Missile Defense
599
600Modern ballistic missiles are basically every defense planner's [[NightmareFuel worst nightmare:]] they can be launched with little-to-no warning, fly hundreds-to-thousands of miles in a matter of minutes, and then deliver multiple nuclear weapons to different targets anywhere on the globe. Worse yet, it's impossible to know exactly where they're aimed at until they fire, at which point it is too late to move defensive assets into the path of the missile.\
601
602That last one is why in many ways, ships are ideal Ballistic Missile Defense (BMD) platforms. Thanks to international waters, they can move anywhere there's ocean, and unlike aircraft, they can loiter in good intercept position for months without requiring a base to return to.\
603
604To understand BMD, you need to know a little bit about how Ballistic Missiles operate. There are three phases of flight: Boost, Midcourse, and Terminal.\
605
606* In the Boost phase, the missile is taking off from its launcher and its rocket motor(s) is/are burning. It takes about 5-10 minutes depending on the range to target. The huge, hot exhaust plume makes it easy to detect and track, and it's at its most fragile during the stresses of acceleration. Unfortunately, to intercept a missile in boost phase, you need to be relatively close to the launch site, have a good idea of where the missile is heading, and have an interceptor system that can catch up to and ''overtake'' a missile which is literally rocketing upward and accelerating into space. Also, unless you expect a launch, you may not have sensors looking in the right direction to detect the launch until the missile is at higher altitude.
607* In the Midcourse phase, the missile's motor has burned out and it is coasting on a ballistic arc towards its target. For [=ICBMs=], this will be outside the atmosphere. During this phase the boost stages will drop off and if the missile has multiple warheads, they will separate and maneuver to point towards their respective targets. Surface-based radars should be able to easily detect them now, and once they are being tracked it becomes relatively easy to figure out where they are headed. This is the longest phase, giving a defender the most chances to intercept them. The hard part about intercepting in midcourse is that most missile designers today include decoys with their warheads that make it very difficult to tell which are real warheads and hit them, and again, the warheads are moving very, ''very'' fast and are high up in space.
608* During the Terminal phase, the warheads have re-entered the atmosphere and are screaming out of sky nearly directly on top of their targets. The decoys are now gone, slowed by the atmosphere while the denser warheads fall through. This is the shortest phase, lasting about ''30-60 seconds''. It ends when the warhead detonates on or above its target. The obvious disadvantage of a terminal BMD system is that you have to be near the target, and you have maybe one chance to intercept every incoming warhead before [[UnusualEuphemism you are converted into radioactive ash.]] You'd better hope your missiles are fast and your aim is good.
609
610Most ships are best suited to perform midcourse BMD, which would allow them to cover a broader area and take advantage of their existing systems. To do this, a ship would need radars capable of seeing into space, missiles capable of reaching that high in a very short time, and a guidance system capable of "hitting a bullet with a bullet", as both the interceptor missile and the ballistic missile or its warheads will be moving in different directions at thousands of miles per hour.\
611
612This is a very new warfare area, so feel free to post new examples as they are invented. [[LooseLips Or don't]], if keeping such things a secret is important to you.\
613
614* The US is attempting to turn its [=CGs=] and [=DDGs=] equipped with Aegis into BMD ships using a version of the Standard family of missiles; it appears to be the most successful system so far. In fact, the RIM-161 Standard Missile 3 is also more successful than any known ''land-based'' BMD weapon as well, to the extent that Japan, Poland and Romania are deploying them on land (which is now known as "Aegis Ashore").\
615
616!!Flares
617
618ExactlyWhatItSaysOnTheTin. Warships carry flare launchers to decoy IR Guided (heat-seeking) missiles by creating a heat source hotter than the ship's exhaust. Ideally, the missiles go after the flares and not the ship.
619
620!!Chaff
621
622Chaff consists of thousands of small strips of metal which are fired into the air in a "cloud" to decoy radar-guided missiles in a similar manner to flares. They create a large swarm of false targets and/or a single large, false target for the missile to home in on. The British proved that these work during UsefulNotes/TheFalklandsWar, though they also demonstrated that you should be careful ''where'' exactly you fire these off; in at least one case an incoming missile was fooled by the chaff launched by destroyers, flew through it, and then acquired the next target it found on the other side, which turned out to be a merchant converted into a cargo transport by the British. Whoops.
623
624!!Active radar decoys
625
626These work by flying out away from a ship and then turning on a radar repeater which imitates the signals from a radar-guided misile and hopefully causes it to believe there's a bigger ship where there actually isn't. These are generally more effective than chaff but are generally much more expensive and can get as big as small missiles, so a ship will usually have fewer of them if it has any at all.
627
628* The joint US-Australian built NULKA is one of these.
629* During the Falklands War, Britain used ''manned'' Sea King helicopters as active radar decoys, lacking anything else for the job. Naturally, [[UsefulNotes/TheBritishRoyalFamily HM the Queen's second son]] (then second in line to the throne) was chosen to pilot one of these helicopters.
630
631!!Acoustic decoys
632
633These are decoys either fired underwater or towed behind a ship or submarine whose job it is to fool torpedoes into either going the wrong way or detonating early. Some are noisemakers which imitate the sound of a legitimate target, some are essentially "jammers" which flood the water with sound to confuse sonar, some form a "screen" of bubbles to try and provide active sonar with a bigger target than the submarine/surface ship, and finally some generate a magnetic field intended to fool a torpedo's detonator into thinking its found the target. Some incorporate more than one method.
634
635* The US AN/SLQ-25 "Nixie" is one of these.
636
637!!Torpedo nets
638
639Torpedo nets were nets strung out to protect ships by hopefully catching and slowing them before they hit. They were typically strung out from booms. These became less effective over time as torpedoes became faster, but would still see use in protecting harbors and structures like dams. They were also useful in preventing frogmen or human torpedoes from approaching.
640
641[[/folder]]
642
643[[folder:Miscellaneous Weapons]]
644
645These are weapons that don't fit neatly into one of the above categories.
646
647!!Sailors
648
649Navies have been individually arming sailors since navies were invented.
650* In antiquity, the Romans famously countered their opponent's superiority in naval shiphandling and shipbuilding by adapting their ships to specialize in conducting [[BoardingParty boarding actions]], where their highly effective infantry would give them an edge.
651* Besides ramming, boarding was the other primary tactic of pre-gunpowder navies.
652* During the [[WoodenShipsAndIronMen Age of Sail]], boarding actions carried out by crewman with axes, cutlasses, and pistols were an important means of winning battles, though it began to become more difficult to effectively close to boarding range.
653* While the invention of accurate long-range guns ended the days of daring boarding actions, most ships have a team of specially-trained sailors for boarding (ostensibly) unarmed vessels and for in-port security. As well as occasionally at-sea security, as seen on the night of October 7, 2009 when [[RuthlessModernPirates Somali pirates]] boarded what they mistook for a civilian tanker but was actually [[BullyingADragon a French Navy command ship]]. And on January 12, 2012 when they did it again, this time to a Spanish Navy replenishment ship. Boarding teams are usually at least as well-armed as the average infantryman on land and will typically have nifty things like ballistic vests that are also flotation devices, rope ladders with hooks and poles for getting up the side of ships, and tools for cutting through metal doors. Their weapons are generally more compact so as to be easier to maneuver inside cramped ships.
654
655!!Rams
656
657In the early days of fragile, wooden, and human-powered ships, one reliable way to sink an enemy ship was [[RammingAlwaysWorks to ram it with your own]], assuming your ship was strong enough to to survive the hit. Ancient navies often designed ships specifically for ramming as their primary offensive tactic, reinforcing the ship to better withstand impacts from the front and building wooden and metal extensions on the bow designed to pierce the enemy's ships at or below the waterline. Ramming remained a primary tactic until certain technologies began to make it less popular:
658* The rise of reliable sailing ships starting around the 1500s, which were not limited by the endurance of human rowers. A fleet of sailing ships could simply avoid battle with oar-powered ships under most circumstances, and could likewise take the fight to places well outside the range of rowed ships.
659* The rise of naval guns. Once guns became powerful and numerous enough, it simply became impossible for ships to reliably close and ram without being torn apart on the way in by the enemy's guns.
660There was a brief resurgence of ram-armed ships in the mid-late 1800s when the combination of heavy armor and steam power allowed for ships that could survive contemporary gunfire long enough to execute a ramming attack, but it was short-lived as gun technology just kept improving to the point where armor only became effective at long range.
661
662!!Pre-Firearm Ballistic Weapons
663
664Bows and arrows, ballistae, and even catapults were sometimes mounted on naval ships throughout history. However, their range, accuracy, and ballistic power were never enough to make them the dominant and decisive weapons of their era and most naval fights until the 1500s turned on ramming and boarding actions.
665
666!!Sacrificial or Suicide Vessels
667
668These are ships or other vehicles which are meant to be destroyed themselves in the process of destroying their enemies. Sometimes the crew is offered an opportunity to escape, [[SuicideAttack sometimes not.]]
669* Fireships were frequently used in the Age of Sail against docked or anchored ships. Basically an old or unneeded ship would be loaded up with highly flammable material, sailed close to an enemy ship or fleet, and ignited. To try to prevent premature ignition, most of these fireship attacks were carried out at night or under some sort of ruse to prevent the enemy from realizing what was going on until it was too late. The crew would typically attempt to bail out just after lighting the fire. Even if the fireship didn't manage to ignite any enemy ships, the panic and confusion they caused could often be an effective weapon itself, as the sailors in the enemy ships would frantically try to get away in any way they could, leading to cut anchor cables, collisions and groundings in the dark, and abandoning ship early. Once ships began to be build of iron and steel, this was no longer a viable tactic.
670* Suicide boats and submarines loaded with explosives and piloted by volunteers have been used in combat more-or-less successfully in the last 100 years or so.
671** During World War II:
672*** The Japanese used the Kaiten human-piloted torpedoes near the end of the war and sank at least 3 US ships using them.
673*** The Imperial Japanese Army and Navy infamously used piloted aircraft as weapons against allied ships late in the war which became known as Kamikaze. Although they were well-organized, this was still a desperation tactic brought on by having lost most of their well-trained pilots over the last 3 years to increasingly competent and numerous allied pilots and anti-aircraft gunners. It came to the point where they could produce replacement aircraft faster than they could train pilots to effectively fly them; but training a pilot who only had to fly one mission was much faster. Most of these were modified regular aircraft, but they did create purpose-built suicide aircaft by the end of the war.
674*** The Italian[[note]]Who also used them during World War I[[/note]], British, and German navies all used torpedo-like vehicles to convey divers and built-in limpet mines to enemy ships in harbor, though with provisions for the subsequent escape of the divers. [[SuicideMission Their use was still extremely dangerous, however]]. The Italians had the most success with them, sinking several British ships in harbor, including two battleships.
675** In October 2000 the USS ''Cole'' was successfully attacked Al Qaeda terrorists who came alongside the ship in a boat filled with explosives, posing as a civilian service vessel. 17 sailors were killed and a 40 by 60 foot hole was blown in the side, but the crew managed to conduct effective damage control and save the ship from sinking. The ''Cole'' was later brought back to the US aboard a super-heavy lift ship, repaired, and returned to service.
676* The proliferation of unmanned, remotely controlled vehicles filled with explosives is reviving the concept. These have the advantage of being significantly cheaper and easier to build than a torpedo or cruise missile, and have all the flexibility of a manned suicide vehicle without sacrificing the crew.
677** Ukraine used several of these to strike Russian ships and maritime infrastructure in the 2022 Russo-Ukranian war.
678
679!!Dedicated Incendiary Weapons
680
681The primary building material for ships until the mid-1800s was wood, with cord and canvas as major secondary components, so fire was an effective weapon for much of naval history. Its use was always dangerous to the wielder, however, as their own ship was made of the same materials. Once iron and steel ships began being built, however, fire by itself became much less likely to destroy a ship on its own without an accompanying explosive to help it get into the interior of the enemy ship. Some notable incendiary weapons:
682* Greek Fire was an incendiary compound used by the Byzantine Empire for naval warfare, sprayed onto enemy ships using what was essentially an early flamethrower. Many sources state that it would burn even in contact with water, and some historians say that it would actually ignite ''on contact'' with water. It's exact composition was a closely-guarded state secret, so to this day no one is sure of what it was made of and it cannot be reproduced accurately.
683* Some river monitors were equipped with flamethrowers firing Napalm by the US Navy during the Vietnam War, though these were largely intended for attacking enemies on shore.
684
685[[/folder]]

Top