"It follows than as certain as that night succeeds the day, that without a decisive naval force we can do nothing definitive, and with it, everything honorable and glorious."Ever since men have "gone down to the sea in their ships", they have also devised new and interesting ways of killing each other from these ships. The history of Naval Warfare can be split up into a number of distinct eras, based on the style of combat that the technology available at the time could support. Galley Combat (Antiquity-1600s) In this earliest period, ships were small, fragile, and mainly man-powered. Sail was a useful backup and a means of going longer distances but not very reliable or good for close in maneuvering. Because of this, the two main ways to win a fight at sea during this time were to ram the enemy to break his fragile ship, or to board his ship with soldiers and hack the rowers to pieces. Since the ships were made of wood, fire also made an effective weapon, but employing it without also setting your own ships on fire was tricky at best. Archers extended your range a little but didn't do enough damage to be decisive; you could always take cover behind the sides of the ship, and on larger ships the rowers were usually on a separate internal deck. With the battles conducted close to shore and with lots of generally small, slow ships that were only useful at close range, tactics at sea in this period mimicked tactics on land. Your ships formed up into ranks, tried to maneuver and flank the enemy from the side, and then charged into them, with the battle devolving into a general melee after this point. If you want a good picture of this, the first act of Ben-Hur is a pretty decent reenactment. Given the reliance on boarding, the front lines of ramming galleys were often backed by a fleet of whatever else happened to be available, because any ship that could carry additional men to the battle was potentially a warship. At this point in history the distinction been warships and merchant ships could be decidedly murky. This would remain true until the mid-1800s, when ships began to be made with more and more steel elements (eventually resulting in all-steel ships by 1900) and the internal layouts required to mount effective naval weapons began to differ significantly from those needed to efficiently carry cargo.note The ability for a merchant ship to function as (or disguise itself as) a light warship, and vice-versa, was an important part of the tactics of deception and ruse de guerre during this period and the subsequent Age of Sail. This was also one of the major reasons becoming a pirate was so easy until the mid-late 1800s; all you had to do was gather up a bunch of disreputable sailors, acquire a ship (which might have even come with weapons, as ironically, merchants would arm themselves in case of pirates), and prowl the usual merchant lanesnote . Indeed, some merchant vessels did a bit of opportunistic piracy on the side, British smuggler ships operating in the Castilian Caribbean being infamous for that sort of thing c.1650-1750. Naval battles of this period were generally epic in scope, because the small ships were relatively cheap to produce and most of the crew didn't need any skills other than the ability to pull an oar. The 480BC Battle of Salamis between an Athenian-led Greek Coalition and the Persian empire featured as many as a 1000 ships and who-knows how many men, and the 1571 Battle of Lepanto between the Castilian-Venetian Coalition and the Ottoman Empire involved 451 ships and sixty thousand men. Testament to the ease of replacement in these things is the way that despite losing nearly 4/5 of their entire fleet in the battle, the Ottomans managed to replace it within a year. The sailors and commanders with combat experience were another matter, of course. Losses in these battles were made worse by the fact that most of the sailors didn't know how to swim, something which, strangely enough persisted well into the early 20th century: one theory held that teaching sailors how to swim merely encouraged them to abandon ship prematurely. Another was that sailors believed that during a shipwreck at sea, you were doomed anyway, and it was better to go with a quick death from drowning than a drawn out one from dehydration/starvation. This period lasted until the mid-Renaissance period, when improvements in ship design and the invention of firearms led to a shift in strategy. The last great galley battle was the Battle of Lepanto in 1571, a Papal-Venetian-Spanish victory over superior Turkish forces that gives its name to a common strategy in Diplomacy. The Age of Sail (1600s-1870s)
I wish to have no connection with any ship that does not sail fast; for I intend to go in harm's way.
John Paul Jones
...no captain can do very wrong if he places his ship alongside that of the enemy.Home to Wooden Ships and Iron Men, battles in this era were fought by large, tall-masted sailing ships packed to the brim with cannons firing iron shot. With stronger hulls and more efficient sails, ships now used sail power alone for propulsion, and could travel quite long distances, though not without risk. A good date to place the starting point of this phase in naval history would be the Battle of the Spanish Armada in 1588, resulting in an English victory over said Armada: while recognizable cannon-armed sailing ships had existed for almost a century by that point, unreliable gunnery and resistance to change meant that all previous battles had still turned on boarding actions and uncoordinated melees. Cannons and maneuver were now the decisive weapons in battle — a ship or fleet with longer-range cannons and better maneuverability could dance around their enemy, just out of range of return fire, and pound them into a splintery, bloody mess. This is exactly what the English did to the Spanish in 1588. Tactics began to depart from the terminology of land battles and become unique to the ocean environment. Battles took place at longer range, with fewer but more powerful ships. Standard practice for fleet battles was to line up one-on-one with the enemy to avoid interfering with your allies, and may the best man win. Battles between single frigates could be more interesting. And since all ships were powered by sails, simply having "the Weather Gauge" (the upwind position) often made all the difference because it could make your ships faster and literally (if you 'stole' their wind by being directly upwind of them) bring the enemy's to a standstill. Sea battles took on a decided "hurry up and wait" character during the Age of Sail, as ships were restricted to maneuvering with the wind and speeds rarely exceeded eight or nine knots. Warships could literally take hours maneuvering into a position where they could profitably employ their broadsides (the British approach at Trafalgar took almost all day). The desultory nature of combat under sail often meant sailors had to endure minutes or even hours waiting for a withering storm of fire that might decimate their ranks in seconds, only to spend minutes or hours waiting and preparing for it to happen again. Hence the expression "wooden ships and iron men." Despite their power, however, cannons were still relatively short ranged and were unlikely to sink or destroy a ship outright. A ship that lacked in the firepower department but had good maneuverability and lots of men could also manage to get in close and carry the ship by boarding. For this purpose, Marines were developed as soldiers specifically trained to fight at sea, as opposed to the crew just trying to kill the other crew. Ship designs gradually became more specialized as fleets gradually evolved from hastily organized mobs of armed merchant and trading vessels to professional standing navies. It was this set of circumstances which caused the trope of The Captain to come about. When ships gained the ability to venture far from land and human contact, the Master or Captain of the ship had authority second only to God. With the warships of different states essentially similar in capability, and all at the mercy of the winds, it was the Captain's skill, leadership, and daring which most often won the day. During this period the Dutch rose to rule the waves... and after four Anglo-Dutch Wars the British Empire replaced them, and from this we get most of our naval terminology in English. For example, the term Battleship comes from "ship of the line" or "line of battle ship", meaning a ship whose job is to form up with the fleet and battle the enemy in the "line of battle." They pretty much set The Laws and Customs of War on the sea during this period. This is also considered the "Golden Age" of international piracy. The Age of Sail lasted roughly into the early 1800s, until sometime between the end of The Napoleonic Wars and the beginning of The American Civil War. By this point, most naval powers had consolidated their strength into two basic types of ship, the powerful "ship of the line" which sailed directly from home port to a massivenote fleet battle, and the less powerful frigate, which could spend months or years at sea and generally fought other frigates in small squadrons (or even one-on-one battles) in sea lanes far from home. Big Gun Battleships (1820s-1950s)
Fear God and Dread Nought.
There appears to be something wrong with our bloody ships today.The mid nineteenth century brought with it a number of key advances in naval technology:
Admiral Sir David Beattie, Jutland
- Explosive shells were developed for naval guns, greatly increasing their destructive power.
- Improvements in gun design increased range, weight of projectiles, accuracy, and rate of fire. Fewer but bigger guns became the norm.
- New mechanical recoil, reloading, aiming, and fire-control systems allowed guns to be placed in turrets able to point in any direction. Naval gunners could now hit targets at range even on pitching seas, and ship designers were freed from having to place all the guns on the sides of the ship.
- The steam engine freed ships from dependence upon the wind, and screw propellers soon replaced inefficient and vulnerable paddle wheels.
- As a reaction to the above technologies armor plating was fitted to warships (first seen in the Crimean War and widely employed in the American Civil War).
- And later, ships began to be built entirely of iron and later steel.
[T]he torpedoplane, under favorable conditions, would make the $20,000 airplane a worthy match for a $20,000,000 battle cruiser.WW1 and almost immediately afterward someone thought "Wouldn't it be cool if we could use these things to spot enemy ships?" which quickly morphed into "Wouldn't it be really cool if we could use these things to blow up those ships?" and "wouldn't it also be be cool if we could get these things across oceans without having to fly them the whole way!" Thus Naval Aviation was born. At first they were just little seaplanes used as long-range scouts for Battleships, but as airplanes developed they gradually became capable of carrying enough explosives to do some major damage. Meanwhile, the desire for scouting aircraft to accompany the battle fleet beyond the range of land based aircraft resulted in an entirely new type of warship when the Royal Navy converted HMS Furious into the world's first aircraft carrier. This was followed by a two-decade period of naval experimentation similar to the one proceeding the Big-gun battleship that also produced some rather odd-looking vessels before arriving at the basic carrier design of a large fast ship with a flat deck and minimal superstructure that is still familiar today. And to pile irony upon irony, several of these carriers were built using the hulls of battleships and battlecruisers countries were forced to discard under the Washington Naval Treaty. In the inter-war period there was a huge debate in the world's navies between proponents of building more battleships and supporters of building more aircraft and carriers. The battleship side argued that aircraft were fragile, unreliable, too dependent upon good weather, couldn't carry enough stuff to damage a battleship and thus were a waste of money. The carrier side argued that superior range and speed would enable their airplanes to locate, attack and sink any enemy battleship before it even came into gun range and since carriers could better defend themselves against enemy aircraft and the airplanes themselves were relatively cheap and could be built in vast numbers that meant battleships were a waste of money. Meanwhile advocates of land-based air power such as Colonel Billy Mitchell of the United States Army "agreed" with both sides by arguing that aircraft made the entire idea of a Navy obsolete and thus all warships were a waste of money that (incidentally) should be given to the Army to buy more bombers. (If sailors on both sides of the battleship/carrier debate agreed on one thing it was a common hatred for "army pukes" like Mitchell.) However, while Naval Aviation in the 1920s and 30s clearly showed some future promise, it did not yet demonstrate the sort of clear superiority that would make Admirals willing to give up their battleships. Air forces on the other hand spent much of the 1930s developing fast, long-range twin-engine torpedo bombers for coastal defense.note Parallels could be drawn between the torpedo and naval mine — cheap weapons capable of damaging or destroying a battleship, deliverable by inexpensive vehicles (torpedo boats, destroyers, submarines, or minelayers) which introduced new dynamics to naval warfare in the first decade of the 20th century, but failed to knock the battleship off its pedestal. Surely airpower would likewise be inconsequential so long as battleships mounted a couple anti-arcraft guns and applied appropriate defensive tactics. A series of naval airstrikes over 1940-41 quickly made clear the battleship was on its way out, and control of the sea rested on who could throw the most aircraft at whom:
Rear Admiral Bradley A. Fiske, 1917
- On 11-12 November 1940 a daring British nighttime carrier strike at Taranto severely damaged three of the newest battleships in the Italian fleet, using a few obsolete and underarmed torpedo bombers.
- On 26 May 1941 another British carrier strike (flown by inexperienced pilots in appalling weather conditions, with the aforementioned planes) managed to achieve a lucky torpedo hit that disabled the steering on the German battleship Bismarck, preventing her from fleeing the pursuit of a British battleship force and leading directly to her sinking/scuttling.
- On 7 December 1941 Japan combined all six of its fleet carriers into a unified strike force and surprised the US Pacific fleet at Pearl Harbor, destroying virtually all of their aircraft on the ground and disabling or destroying seven of the eight battleships present.note
- On 10 December 1941, HMS Prince of Wales and HMS Repulse (a brand-new battleship and an old battle cruiser, respectively) were engaged by aircraft off Malaya. Despite being out at sea, fully alert and defending themselves (but without friendly fighter cover) the ships were no match against a concerted aerial attack by Japanese land-based torpedo bombers note . It is also worth noting that sea conditions during the attack meant a significant number of torpedos missed the main armour belts, showing another weakness of traditional sea-power.
Take her down!
The last known words of Commander Howard Gilmore, Captain of USS Growler (SS-215). Wounded during a surface gun battle with a Japanese escort vessel Gilmore ordered his crew to dive while he was still on top of the submarine and outside the pressure hull, sacrificing his own life to save the ship.''
The only thing I truly feared during the war was Dönitz and his U-boats.The very idea of a ship has a single weak point: if it sinks, it's useless. Someone finally got to the conclusion "Gee, wouldn't it be funny if I swam over there and made a hole in that ship?". Not everyone, though, is a good swimmer, and not every good swimmer swims well enough. So someone came up with the idea that all this swimming under sea's surface can be done by a dedicated machine: sub(under) marine(sea); in a sense, it's a SUBversion of the concept of a ship. Naturally, it's an idea that has primarily appealed to underdogs. Which is why the first recorded instances of attempted submarine attacks were made by weak naval powers against much stronger ones. The first recorded attempted submarine attack took place in the American Revolutionary war, when David Bushnell's Turtle (essentially a wooden barrel driven by hand-cranked propellers) tried and failed to attach a mine to a British warship. The second, more successful attack occurred during the American Civil War when the somewhat more sophisticated (but still hand cranked) Confederate submarine Hunley managed to sink U.S.S. Housatonic with a "spar torpedo" (essentially a bomb on a stick) at the cost of the lives of her own crew. The Confederates also tried steam powered semi-submersibles called "Davids" that were virtually submarines (only a small part stuck up above the water) but without success. Two things were invented near the end of the 19th Century that made things look up (or down) for submarine enthusiasts: the first was the invention of the self propelled or "locomotive" torpedo, which gave submarines a weapon they could use from a range greater than 20 feet and without surfacing, and the second was the invention of the internal combustion engine and the electric motor, which together freed submarine crewmen from all of that laborious hand-crankery provided they were given sufficient time between dives to recharge their batteries on the surface. Once again it was a couple of Americans, Simon Lake and John Philip Holland,note who put these things together to create the first modern submarines, though since the U.S. was no longer a naval underdog Lake and Holland (who were competitors, not collaborators) had to go elsewhere to find someone who was truly interested in their machines. And now we come to the part when it begins to matter, because for Lake in particular that someone was Wilhelm II, the Kaiser (Emperor) of Germany (Lake's main competitor Holland, on the other hand, had his main success with the Germany's main rivals — United Kingdom and Imperial Russia). Germany, being unified only around the 1870s, was a bit late to the colonial cake. Being late, it had yet to build up its naval muscle. The Germans took up the development of their Hochseeflotte and, through creating it and pursuing a ham-fisted policy of colonial expansion to match everyone else's, help drive a neutral country (the insular United Kingdom) into the arms of its enemy (France). A country which was renowned for its naval capabilities, to boot. Between this and the failure to maintain cordial relations with Russia, which France also drew into her orbit as an ally, Germany had surrounded herself with strong enemies and just one weak friend (Austria-Hungary). However, the German navy noted, the situation might not be as grim as it appeared. Germany was dependent on foreign trade, but so was France. Britain was even more so. While trade ships could be protected from surface ships by the Entente's navy, they would still be vulnerable to submarine attack. Even from the submarines of the day, which were still little more then temporarily submersible (one hoped) torpedo boats. A bit of trivia: one of the most successful submarine captains of World War I was an Austro-Hungrian officer named Georg Von Trapp. And thus, the Germans embraced the submarine as a means of naval warfare, and thus the word U-Boat (Unterseeboot, "undersea boat" — or "sub"-"marine") entered dictionaries, with all submarines being referred to as "boats" to this day. While the Germans were generally quite gentlemanly surfacing to stop ships before torpedoing them their superiors eventually realized that this exposed their subs to British countermeasures and in early 1917 high command ordered them to stop doing it as it threw away the advantage of surprise. Besides, depriving France and Britain of sea trade required more than just torpedoing merchant vessels, so the idea of unrestricted submarine warfare was born: sink all ships you suspected of aiding your enemy, even if they belonged to neutral states, and let the chips fall where they may. Unsurprisingly, the 'study' which 'proved' that adoption of such a policy could win the war for Germany was championed by the third OHL despite there being no grounds to believe it would work. Germany's situation appeared truly dire at the time, with Russia standing firm in the east and the USA's sales to the western Entente increasing daily. Unrestricted Submarine Warfare was the only policy which promised victory, however unlikely some thought it might be (and rightly). The motion was voted through with overwhelming cross-party support from virtually the entire Reichstag. The policy not only failed, but drew the United States into the conflict in mid-1917. This was not an immediate disaster, as the USA had a very small army at the time, and moreover was on the other side of the ocean. note . However, it did give the Entente enough 'first-rate' manpower to execute another two years of high-casualty warfare which valued taking and holding as much ground as possible over preserving lives. Germany, France, and Britain had all run out in 1916 and switched to low-casualty warfare which valued preserving as many lives as possible over taking and holding ground. The USA's entry was a game-changer because now, the Entente could take the losses needed to force its way through Germany's defences again, and again, and again, until they could no longer form any more and their depleted forces broke completely. This is exactly what happened in summer 1918, with Austria-Hungary and Germany suing for peace in October-November 1918. The submarine threat caused the Allied to adopt convoysnote to protect their shipping and to seek out ways to detect and dispose of them, starting with depth charges and hydrophones and proceeding through sonar to radar and radio direction finding — as well as specific kinds ships to carry all of these things. Twenty years after the first World War Britain was still an island so the Germans tried the same naval strategy again — this time with significantly more success, since they'd also developed their "wolfpack" tactics in the interim. The idea behind the wolfpack was fairly simple—any submarine locating a convoy would report it to base, which would in turn vector all available U-Boats to the vicinity. The Allies in turn responded to heavy losses with new technologies — radar and aircraft, both land-based and flying from the small "escort carriers" mentioned above, fancier means of delivering depth charges like "hedgehog" and "mousetrap" and eventually even acoustic homing torpedoes. The Germans, in turn, responded with defensive homing torpedoes of their own, radar warning receivers, anti-sonar and radar coatings, the Schnorkel which allowed subs to cruise submerged while recharging their batteries, and ultimately the Type XXI, a very advanced type of sub that carried a larger number of torpedoes and was actually fast enough to run away from the subchasers, even while underwater. Ultimately the end result of the battle of the Atlantic (which lasted from the beginning of the war in 1939 to the end in 1945, making it the longest battle in human history) was defeat for Germany. But that didn't mean it wasn't a near-run thing. And despite all the gee-whiz gadgetry the true key to victory proved to be the German's heavy dependence upon radio to control their Wolfpacks, which left the U-boats vulnerable to both high-tech code-breaking and low-tech radio direction finding. Meanwhile, on the other side of the world, the United States, despite having been drawn into two world wars largely over their objections to the unrestricted submarine warfare conducted by Germany, was ironically enough engaged in an unrestricted submarine campaign of their own against another island nation-state: Imperial Japan. This time with the technological balance firmly on their side the result was a resounding victory for the submarines. U.S. submarines sank thousands of Japanese ships, far more than all other arms combined, despite having spent the first 21 months of the war with defective (and often ineffective) torpedoes. Nor was the Pacific submarine war entirely one sided: early Japanese successes against major U.S. warships note critically reduced U.S. aircraft carrier strength during the pivotal Guadalcanal campaign and ensured that there were no carrier battles in 1943. After the war, somebody came up with the idea that the newly-invented nuclear reactor would make a fine, nearly unlimited, energy source for a submarine, allowing the sub to stay underwater almost as long as its crew wanted to. And then, somebody got the idea — first proposed by, again, the Germans (they even had prototypes) — to arm them with rockets, this time nuke-tipped. And thus, thanks to wonders of nuclear physics, the sub was promoted from highly dangerous seaborne nuisance to strategic threat (H. G. Wells saw it coming). As a nearly unintentional side-benefit, nuclear power also made the noisy, clanky machinery of submarines much, much quieter, making true stealth under the water possible. Ironically there some water conditions where some of the quietest submarines, such as the United States' Ohio class, can be detected by a particularly skilled and alert sonar operator by being quieter than the surrounding water. Non-nuclear submarines can also shut down any mechanical equipment, potentially rendering them entirely quiet at the cost of not being able to do anything. A nuclear sub cannot shut down its coolant pumps while the reactor remains hot. Nuclear Power (1950s-present)
Underway on nuclear power.It was realised that nuclear power was not only useful for submarines, but other vessels too, which would not need to be refueled at sea. And fuel occupies space and weight that ship designers would often prefer to use for other things. Even burning fuel can cause problems if the empty tanks are not ballasted to maintain stability. Aircraft carriers especially benefit from nuclear power, since the tanks not used to carry fuel for the ship can instead be used to carry fuel for the aircraft. The United States proved the concept with USS Enterprise followed over a period of five decades by the ten-ship Nimitz-class, the last of which is now entering service. Another class, the Gerald R. Ford-class (named after Ford more or less because he happened to have died shortly before the construction contract was awarded, and also because he had served on a light carrier in the Pacific Theatre during WWII), is in the construction process; the lead ship, USS Gerald R. Ford (CVN-78) is due to be launched in spring 2016. Nuclear-powered cruisers and destroyers followed, but nearly none remain in service (bar two of the Soviet/Russian "Kirovs"), mostly due to the end of the Cold War. While there have been some safety concerns, especially early on and in the Soviet Navy (whose early nuclear shipbuilding program was very rushed), radiation has not proven to be the problem so much as cost. The major bar to nuclear powered ships is and always has been the expense. Nuclear ships are extremely expensive to build and even expensive to decommission after you are done with them. Nuclear powered ships are so expensive that only a few countries were ever able to afford them, and even then a few. It's been calculated that the total cost of running a nuclear ship over its lifetime becomes lower than that of a conventional ship only for the fairly large ones: starting at about 12 to 15 kilotons of displacement, and few modern warships are that big. Basically only heavy cruisers and aircraft carriers can be justified to be made nuclear, and so they did. However, building, equipping, and operating a modern full-sized fleet carrier—conventionally powered or nuclear—is so stupendously expensive that the U.S. is currently the only power willing to maintain even one of them. France, Soviet Union/Russia and now China also has a large carrier each, but these are a good 30% (Kuznetsov/Liaoning-class) or even 50% (Charles De Gaulle-class) smaller than a Nimitz-class, and also quite problematic at that. When things get that expensive it doesn't cost that much more to include nuclear power. And even then France, the only country other than than the U.S. to operate a nuclear carrier, had so many problems with her that they decided to make her replacement/complement a conventional ship. Also, given that the cost of maintaining even one fleet carrier is larger than many national defense budgets and anything less than a fleet carrier would be helpless against one (let alone eleven) it should come as no surprise that most countries other than the United States are investing in a different kind of naval air power: the guided missile. Guided Missiles (1960s-present)
Message from USS Nautilus (SSN 571), 17 January 1955
Our scientific power has outrun our spiritual power. We have guided missiles and misguided men.Coinciding with the development of nuclear power for warships, stand-off weaponry started to come into its element. The problem with weapons before this was that their effective range had always been limited by the ability to see the target, and hit him before he got the chance to evade. If you fire from too far away, even if your shot was lined up perfectly (not likely on a pitching sea), the enemy can still try to get out of the way before the projectile reaches him. Even the invention of radar and sonar didn't fully solve this problem, instead merely giving you a "higher" platform from which to look at the enemy from. During World War II, a hard look was taken at the problem, and both sides came up with the same solution: find a way to let the projectile change its course in mid-flight (or swim, for torpedoes). You don't even really have to worry about your aim too much, if the weapon will follow the enemy around until it hits. Thus the guided missile was born. This carried implications beyond the obvious. Scoring hits not longer depended upon pumping as many shells as possible into the air. Increasing the probability that each weapon will hit means you don't have to fire as many of them, which means you don't have to carry as many of them. Self contained weapons need fewer men to service them, and self-propelled weapons don't produce any recoil. All of which meant increasingly powerful weapons could be mounted on smaller and smaller ships. The Germans and the Americans had some success with with radio-guided bombs and missiles during World War II and both sides had also fielded successful acoustic homing torpedoes. The American air-launched Mark 24 "Fido" acoustic torpedo sank or damaged 27% of the submarines it was dropped on. The Germans even managed to sink an Italian battleship (after Italy switched sides and joined the Allies) using the "Fritz-X" air-to-surface missile. The Japanese managed to trump both the Germans and the Americans (and horrify the world) by damaging more than 300 ships using the human-guided missiles known as Kamikaze, sinking 47 ships and causing more than 15,000 casualties. But things really started to develop in the 1960s after the development of semiconductors resulted in quantum leaps in electronic control systems. Following the Japanese lead, the Soviets and Americans developed long-range guided anti-shipping cruise missiles, originally designed to fly high like normal aircraft and then dive on their target at very high speed — essentially pilotless kamikazes. Sea-skimmers followed later. At the same time, the dominance of air power also lead both sides to develop a myriad of anti-air missiles as well—and navies, now terrified of the damage anti-ship missiles could do to their ships, realized that since an anti-ship cruise missile is basically a small, unmanned, explosive aircraft, ships had now been given a way to defend themselves again. Both sorts of missile began to increase in range, power and accuracy. This caused problems with guidance, namely the fact that most radars can't go too far beyond the horizon — the ones that can wouldn't fit on a ship, leading to developments in target data-sharing, allowing an airplane, helicopter or submarine to send course corrections to the missiles in flight. The Soviets did some work on radar satellites to detect U.S. carrier groups from space (the stupendous energy needs of which also meant that they also had the lead in the satellite-based nuclear reactors), the Americans worked on anti-satellite weapons, so the Soviets did the same. Originally considered poor man's airpower for countries that couldn't build or afford carriers, missiles soon changed the face of naval warfare because they allowed a relatively small boat to pack a big punch. Like the submarine and airplane before them, missiles primarily appealed to a relatively weak naval power hoping to leapfrog a larger rival, in this case the Soviet Union. In the Six Day War of 1967, Soviet-built "Komar"-class missile boats in Egyptian service sank several Israeli vessels, including a destroyer, which was a wake-up call for everyone. Some were heedless though, and in the 1972 war the Indian Navy pretty much destroyed the Pakistani naval base in Karachi with two extremely successful raids using Soviet-built missile boats, sinking a number of Pakistani vessels and blowing up much of the port's land-based infrastructure while sustaining zero losses. These episodes proved without doubt that firepower had at last won the ancient struggle of gun vs armor. In this new environment, the only real defense was not getting hit. Small, fast missile boats rapidly replaced larger vessels in the navies of smaller states because they were significantly cheaper to build, maintain, and man while their powerful missile batteries offered the same sort of David-vs-Goliath defense capabilities that torpedo boats had offered against battleships in the previous century. (They also have the advantage of being a lot more useful for most of the peacetime missions navies have, like fisheries patrol and search and rescue.) Countries with transoceanic commitments that required large ships couldn't take that route, however, and this inspired all sides to work on countermeasures like jammers, chaff, surface-to-air missiles that could shoot down anti-shipping missiles, culminating in the U.S. Aegis system, and on gatling gun based automated "close in weapons systems" for last ditch defense. In 1982, two modern navies went to war over some islands in the South Atlantic. Argentina demonstrated the effectiveness of sea-skimming cruise missiles using the (in)famous French-made Exocet. The British demonstrated the effectiveness of chaff as a decoy. Both demonstrations were particularly vivid in the case of the Atlantic Conveyor on 25 May, where the chaff from one vessel attracted two Exocets but led to the missiles acquiring the next target they could, a requisitioned merchant vessel. Two missiles designed to destroy a warship made short work of the Atlantic Conveyor which promptly sank, resulting in the loss of twelve men and a lot of helicopters. It also meant the British troops had to walk across the Falklands to capture Port Stanley. There was a sense of the old here too — General Belgrano, an Argentine gun cruiser of World War II vintage (previously the USS Phoenix) was sunk using torpedoes of World War II design from a nuclear-powered submarine, an act that to this day constitutes the only confirmed kills by a nuclear powered sub in combat. Gotcha. Naval warfare sped up tremendously here — in the case of HMS Sheffield, the time from Exocet launch to impact was four minutes — with Sheffield only getting five seconds warning as they disbelieved the alert until it was too late. In a confrontation between the U.S. and Iranian navies precipitated by the mining of USS Samuel B Roberts an Iranian patrol boat was sunk so quickly by two U.S. missiles that a third missile couldn't find enough left of it to hit. On the other hand, two Iraqi-launched Exocets failed to sink the frigate USS Stark due to a combination of sheer luck (HMS Sheffield lost her high-pressure fire extinguishing system due to the missile impact), stout construction, and outstanding damage control work on the part of the crew, proving that even in the missile age luck and seamanship still count for something. In the 1991 Gulf War, anti-missile missiles finally proved their effectiveness when a British Sea Dart destroyed an Iraqi "Silkworm" missile fired against USS Missouri, one of the world's last battleships and ironically the one ship in the world least likely to be damaged by it. The 21st Century While there have been no major naval conflicts in the 21st century, some armchair-generals have speculated that the standard carrier group still in use by the U.S. has been rendered obsolete in that they are basically large sitting ducks to the newer technologies above. The theory goes that a multi-billion dollar carrier can apparently easily be overwhelmed by multiple low cost missiles approaching at Mach 2+ speeds from different directions. Actual non-armchair (lieutenant) general Paul K. Van Riper used a similar strategy to "sink" 16 American warships, including a carrier, during the 2002 Millennium Challenge wargame, though the feasibility of those results are questionable, at best. Navies are not blind to this idea, as it's been considered as a possible scenario since the late 1970s: the infamous "Backfire" raid scenario, consisting of supersonic Soviet bombers firing numerous missiles, haunted U.S. planning throughout the late Cold War. The U.S. Aegis system installed on cruisers and destroyers was designed with the express purpose of defeating this threat, and is capable of engaging dozens of small, fast moving targets simultaneously at any range from "beyond visual" to "knife fight". In fairness, there has not been a major missile engagement since the system was invented, so it is unknown how well it would work in a real fight. The new British Type 45 destroyers are another attempt at dealing with this problem. The official stats claim it has the smallest radar profile of any modern surface warship and an air-defence system capable of destroying multiple objects the size of cricket balls traveling at Mach 3. This argument also begs the question of who exactly is going to be firing all those anti-ship missiles; after the end of the USSR, the potential for a massive missile attack on a carrier group has gone way down. Russia, despite a recent naval buildup combining several new missile-heavy designs and a generally more aggressive attitude currently has neither the resources, the intention, or the warm water portsnote to enter into another major naval arms race. So for now the states of the world seem content (or at least resigned) to the allow the U.S. Navy to continue to dominate the world's oceans just as they have since WWII, a situation that seems unlikely to change as long as the U.S. Navy outguns all of the world's other navies put together. Ballistic missiles have also been proposed as a "carrier killer" weapon, most notably by the Chinese. They would have the advantage of nearly unlimited range, and allow for extremely fast attacks with minimal warning. However, there are questions about whether they've really created an accurate enough weapon to be effective without a nuclear warhead, and whether they would actually ever consider using one even in a declared war—all ballistic missiles look the same on radar, and in general countries don't want to fire any kind of ballistic missile towards an adversary out of fear it might be mistaken for a nuke, which could lead to said adversary responding with actual nukes.note Additionally, several navies—most notably the US—have begun installing Anti-Ballistic Missile systems on their escort ships. The eternal battle between offensive and defensive weapons continues. Other emerging naval technologies include:
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- Stealth Design: Making ships harder to detect by radar, sonar or infrared makes them harder to destroy and allows more opportunity for surprise attacks, but requires some clever engineering and exotic materials to be effective, and a change in surface ship tactics to take advantage of their newfound invisibility.
- Railguns: These have the potential to bring back the age of the battleships, in a way. A railgun or similar electromagnetic weapon would have the ability to take a heavy slug of metal and accelerate it to ridiculous velocities (Mach 6+), to the point where it would have so much kinetic energy on impact with a target that a warhead is pointless. You could as easily bombard land targets hundreds of miles away as destroy ships and aircraft nearby with the same weapon. This is also fast enough that if the fire control system were sufficiently accurate it could be used as an anti-missile system. Eliminating explosive ammo also gets rid of a major shipboard fire hazard and allows the interior layout of ships to be re-arranged, as protected magazines are no longer required. Even simple economics favor railguns, as a 10lb steel spike and generating the electricity to fire it cost significantly less than a 1000lb anti-air missile, and you can fit many more spikes than missiles onboard. Drawbacks would however include the ridiculous power generation capabilities required to charge up the gun's capacitors, and the problem of somehow defending against a railgun hit, not to mention the problems current railgun prototypes are facing with keeping the rails from deforming during firing. The U.S. Navy has taken the lead in developing these and currently holds the world record for most powerful railgun shot, at 32 megaJoules muzzle energy. The real-world meaning of 32 megajoules? The muzzle velocity of the BAE railgun tested was 2520 m/s, well above seven times the speed of sound through air.
- Lasers: Similar to the above, sufficiently powerful lasers would serve as an excellent line-of-sight anti-surface weapons and also be highly effective against aircraft. Additionally, a laser requires no ammo, though subject to vast power requirements. Also currently being pioneered by the US, which possesses an air-based one that can shoot down missiles, and a sea-based one that can light small boats on fire from miles away.
- Unmanned Vehicles: Unmanned surface, flying, and submerged vehicles (USuV, UAV, and USV, respectively) all exist in the world's navies, though they are currently used only for specialty jobs seen as too dangerous for human-piloted vehicles, like mine clearance, target spotting and surveillance, and as target drones. However, several navies are trying to create combat vehicles with no crew-members. Once again, the U.S. does a lot of this. While expensive, the public sensitivity to casualties in war make them ideal for a country that has the naval budget to develop and build them. The ability to send an unmanned vehicle into a dangerous combat situation also has implications for the conduct of battles, as commanders who previously might not have risked people's lives for riskier strategies may no longer have such hesitation.