[[AsYouKnow As we all know]], SpaceIsAnOcean. So naturally, what does TheFederation do when it needs someone to defend it in space? Why, it turns to its Space Navy. A Space Navy has a StandardSciFiFleet naturally enough, which probably includes at least one class of CoolStarship. Likely it will have an arm of {{space marine}}s. But it has more. It has the same sort of atmosphere as a real navy. It has organization and {{obstructive bureaucrat}}s. It has tradition and [[TheHero famous names]]. It might even have in-jokes, perhaps the same ones as when a given writer was in the navy. The heroes will likely be part of a CommandRoster.

See also SpaceSailing.
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!!Examples

[[AC:Anime and Manga]]
* ''Anime/LegendOfGalacticHeroes''
* ''SpaceBattleshipYamato'' AKA''Star Blazers'': The UNCF Cosmo Navy (UNCF stands for United Nations Cosmo Force) battles the Gamilon Empire's fleets.
* ''LightNovel/CrestOfTheStars'', though it become more prominent in the sequels.
* ''Anime/IrresponsibleCaptainTylor'', which is in many ways a straight-up parody of the ''[[UchuuSenkanYamato Yamato]]''.
* ''Franchise/{{Gundam}}''
** One of the Earth Federation Force's branches is the Earth Federation Space Force, coexisting with the Ground Forces.
* ''Anime/{{Macross}}'': Earth's space force is known as UN Spacy (called Robotech Defense Force in ''Anime/{{Robotech}}'', despite having UN Spacy still written on the side of the Valkyries), Spac''y'' follows from Arm''y'' and Nav''y''. By the time of ''Anime/MacrossFrontier'', there is the New UN Spacy which is commonly abbreviated as NUNS.
* In ''MagicalGirlLyricalNanoha'', the [[TheFederation TSAB]] has an interdimensional navy.
* ''ValvraveTheLiberator'': Most of the military, but especially the Dorssian Space Navy.

[[AC:Comic Book]]
* ''ComicBook/AlbedoErmaFelnaEDF'' features three of them for the each of the sides of the conflict: The Extraplanetary Defense Force, the Independent Lepine Republic and [[MegaCorp Enchawah Corp]].


[[AC:{{Film}}]]
* ''StarWars'': The Rebel Fleet and Imperial Navy in the Original Trilogy. Though the heroes were more outside the power-structure of just the Rebel Fleet, being able to function in different capacities. In the StarWarsExpandedUniverse, AscendedExtra [[XWingSeries Wedge Antilles]] has his adventures in a pure Navy-setting. Interestingly, while it would appear that fighter units use naval ranks (Luke is mentioned as a ''Commander''), there are also several generals, implying a separate army.
* ''Film/WingCommander'': The film, basically being WorldWarII InSPACE, centers around a carrier, the TCS ''Tiger Claw'', one of the few surviving ships of a [[MegaNeko Kilrathi]] attack on their home base. They must [[DelayingAction delay the enemy]] long enough for Admiral Tolwyn to move his fleet into position to defend Earth.

[[AC:LiveActionTV]]
* ''Franchise/StarTrek'': Seemingly a 50-50 mix of the Age of Sail and WorldWarII navies.
* ''Series/{{Firefly}}'': The Alliance fleet. Usually a nuisance.
* The Colonial Fleet, or [[EndangeredSpecies what's left of it]], in both ''Series/{{Battlestar Galactica|1978}}'' series.
** In [[Series/BattlestarGalactica2003 the reimagined series]], the concept is actually deconstructed to a point. Pre-Cylon attack, the trope is played deadly straight, but once the series starts the "fleet" has been reduced to a single military CoolShip (and the requisite fighters aboard). Scenes on the Battlestar are still played straight, but in general the series has a very different tone than most space navy shows.
* The ''Daedalus''-class battlecruisers operated by the United States in the StargateVerse both averts it and plays it straight. On one hand, the ship is operated by the United States Air Force, and the rank structure is the same (so the equivalent of TheCaptain is in fact a colonel). On the other hand, the ships have the same "USS" prefix as commissioned Naval ships, although {{Fanon}} held for a while that the prefix was "USAFV" (United States Air Force Vessel, by analogy with USAV, United States Army Vessel; "USAFS", the actual designation for a USAF ship--not currently in use--was apparently not cool enough). This also applies to the Russian-operated ''Korolev'', commanded by Colonel Chekov of the Russian Air Force. It's not stated which branch of the Chinese military operates the ''Sun Tzu'', but it's also likely to be the People's Liberation Army Air Force.
** For the USAF, it's likely their primary role came about partly by coincidence (the Stargate was stored in an Air Force base when the Stargate program began, and the space fleet is an offshoot of that program) and partly because the Air Force was already in charge of the US military's space operations (as in real life).
* ''Series/BabylonFive'' most prominently featured [[WeWillUseWikiWordsInTheFuture EarthForce]], which most (but not all) of the human characters were members of [[spoiler: [[TheWarOfEarthlyAggression until]] [[WhamEpisode mid-Season 3]].]]
* ''Series/SpaceAboveAndBeyond'' featured the US Navy in this role, along with the implied participation of several other nations' space navies in Earth's war against the Chigs. We see a few representatives of the other militaries, but the Americans take the center role in the show (given that the show centers around an American [[SpaceMarine Marine Corps]] squadron, this is {{justified|Trope}}.)
* The old [[TheFederation Systems Commonwealth]] in ''Series/{{Andromeda}}'' had the High Guard, although the titular massive warship often ends up behaving like a jet fighter with barrel rolls and other improbable maneuvers. Like [[Franchise/StarTrek Starfleet]], the High Guard is a combined service, with the main two branches being the Argosy (starship officers) and the Lancer Corps (ground troops and SpaceMarines). Unusual for this setting, there is plenty of InterserviceRivalry between these two groups, although the only thing we see in the show are some nicknames being thrown around (even among ''starships'', such as when Rommie, a warship, disses a Lancer transport).
* ''Series/{{Raumpatrouille}}'' is a notable aversion, here the ranks, organisation, standards of behaviour etc. are based more on those of the air force. The crew of the ''Orion'' for instance behave a lot like stereotypical fighter pilots.

[[AC:{{Literature}}]]
* The Galactic Patrol in Creator/EEDocSmith's ''Literature/{{Lensman}}'' novels, when they were fighting the space fleet of Boskone.
* The ''Warchild'' Series has a Space Navy that was pretty much called just that.
* ''An Exchange of Hostages'' and its sequels deal with a medic/torturer assigned to the resident Space Navy.
* The entire ''Literature/HonorHarrington'' series is about life in one of these, lovingly detailed. As the series goes on, the reader is shown other space navies and how they operate differently, for better or for worse, than the Royal Manticoran Navy.
* The ''Literature/SeafortSaga'' is set within the United Nations Naval Service. An actual Space Navy.
* In Creator/LarryNiven's story "The Return Of William Proxmire", one of the changes to the present caused by TimeTravel and Creator/RobertAHeinlein not being discharged from the Navy due to tuberculous is that space exploration is now part of the Navy's brief, led by Admiral Heinlein.
* Creator/LarryNiven's ''Literature/KnownSpace'' also has the UN Space Navy, particularly involved in the Man-Kzin war series.
* Creator/RobertAHeinlein's ''Literature/StarshipTroopers'' uses naval terminology whenever military spacecraft are involved. The characters even refer to seagoing military ships as a "wet navy" to distinguish them from the space navy they're more familiar with.
* The ''Literature/KrisLongknife'' series revolves around a BadassPrincess who joins the space navy.
* ''Literature/VorkosiganSaga'' has a few references to the Barrayaran navy. It seems more like that of TsaristRussia or ImperialGermany. [[RecycledInSpace naturally]].
* ''Literature/TheHistoryOfTheGalaxy'' series has the Confederate fleet, which started as the ragtag Colonial fleet during the [[TheWarOfEarthlyAggression First Galactic War]], borrowing much from its [[TheEmpire Earth Alliance]] counterpart fleet after winning the war. It was disbanded when the original Confederacy was dissolved but re-formed several decades later along with the Confederacy when it became clear that colonies couldn't defend themselves against an external threat. For most of its existence, it's a StandardSciFiFleet, although later novels have the "standard" fleet reassigned to protect Core worlds only and a new, mobile, carrier-based fleet (focused around new modular fighters) will take its place in the Periphery, which has grown too large for the standard fleet to protect. Strangely enough, it's not uncommon for SpaceFighter pilots to also serve as SpaceMarines and [[RealRobotGenre Real Robot]] pilots, likely an example of TheMainCharactersDoEverything.
* ''Literature/ArrivalsFromTheDark'' books by MikhailAkhmanov have the United Space Forces. Unusually for Russian sci-fi writers, the USF in this setting have the British and American ranking system. In the first novel, the entire USF consists of about 70 ships and several hundred fighters based on them (split up into 3 fleets, each commanded by an admiral from a different Earth power bloc), and its tasks include patrolling the Solar System and countering terrorism threats on Earth. After the failed AlienInvasion, which granted humans plenty of ImportedAlienPhlebotinum, the number of fleets in the USF is increased. Eventually, after a series of wars with other races, the USF becomes the most powerful military force in the known space. After the formation of the Earth Federation, it's renamed to the Earth Federation Space Forces.
* ''Creator/ElizabethMoon'' Writes about Space Navy's a lot.
** Most of ''Literature/FamiliasRegnant'' is about members of the Regular Space Service.
** A key point of the later books of ''Literature/VattasWar'' is Ky Vatta trying to start one due to the face that SpacePirates have united to form a fleet to take control of the universe. Before as each system was it's own government, they used a planetary militia and Main/{{Privateer}}s to protect their own worlds.
** ''Literature/PlanetPirates''
* Because John G. Hemry is a former US Navy officer, the Alliance Fleet from his ''Literature/TheLostFleet'' series is heavily based on current navies. Ship personnel are referred to as sailors and nautical terms are used in navigation. The use of grapeshot, a tactic that went out of date with the age of sail, as an offensive weapon even makes a return.
** Averted by the Syndics, whose hierarchy comes from a militarized corporate structure. Their ranks are various grades of executives, with the most senior being [=CEOs=].
** The ships in the series maneuver partly like modern warships and partly like combat aircraft with fleets passing one another, turning around, then making more passes. The actual exchange of fire takes place in a split-second when the two fleets, moving at a combined speed of 10% of the speed of light move past with the computers directing the exchange. Usually, commanders have to play back the events in slow-mo just to figure out what happened.
* ''Literature/TheOsmerianConflict'' has the United Terran Space Forces that have a hierarchy similar to that Royal Navy.
* ''Literature/EndersGame'' has the International Fleet, formed after the First [[InsectoidAliens Formic]] Invasion, which has various branches responsible for crewing ships, piloting {{Space Fighter}}s, and ground combat. This is because the same international treaty that formed the IF also forced all Earth nations to disband its regular military forces, incorporating them into the IF structure. Naturally, as soon as the war is over, the IF is disbanded, and the nations once again remember old grudges, restoring their usual military structures. Whatever is left of the IF becomes responsible for building colony ships to settle former Formic planets. In the ''Ender'' sequels, the Starways Congress fleet is responsible for peacekeeping in the [[TheFederation Hundred Worlds]] despite the lack of FTL travel.

[[AC:TabletopRPG]]
* ''TabletopGame/{{Spelljammer}}'' ''TabletopGame/DungeonsAndDragons'' campaign setting has Imperial Elven Navy infested by {{obstructive bureaucrat}}s vs. hodgepodge [[OurOrcsAreDifferent Scro]] fleet as major forces; [[FantasyCounterpartCulture Shou]] and some other groundling empires has their own fleets too.
* There are several examples of a SpaceNavy in ''TabletopGame/{{Traveller}}''. Amusingly, in the ''Traveller'' universe the Navy is ''always'' the space navy. Ocean combat forces are part of the Army.
* The ''TabletopGame/{{Warhammer 40000}}'' [[GaidenGame spin-off]] ''BattlefleetGothic'' is all about this, and despite being set in the 41st Millennium has a very Age of Sail feel to things - tactics concern broadsides, line formations, and crossing the enemy's T, and the hordes of crewmen [[WeWillUseManualLaborInTheFuture manually loading]] [[SchizoTech the plasma cannons]] were probably [[PressGanged press-ganged]] from the last planet the ship visited.
** The Imperium of Man made the Imperial Navy separate from the Imperial armies, as a means to prevent would be overlords forming their own space spanning empires that would threaten the Imperiums rule.
* ''TabletopGame/{{Space 1889}}'': averted as far as actual space is concerned. Combat in space is impractical. Combat takes place in the air or air-to-ground, not in space. Played straight in that sky ships are handled by the regular navy, space navy is not a separate branch of the armed forces, terminology and technology is very similar to those of the regular navy.
* Partly averted in ''TranshumanSpace,'' where the USA's military space presence is the ambit of the ''Air Force,'' and thus many traditional "ships in space" tropes are averted. Some of the ''other'' space militaries are run by navies, however (the Royal Navy got responsibility for UK space operations, and China's space military is the People's Liberation Army Navy Space Force), and the US Navy is still not over having lost the war in the Pentagon over space supremacy.
* ''TabletopGame/{{Battletech}}'': The Successor States and the Clans have their own space navy, but they are not as highlighted as mechwarriors. Since the fall of the Star League, the manufacturing of warships and jumpships have been crippled, with the production of the formers destroyed. Recently newer warships are now being produced, and dropships have been redesigned into pocket-warships.
* Justified in ''TabletopGame/RocketAge'', since it is the [[AlternateHistory 1930s]] and the only way the Earthling powers know to manage a fleet of ships is as a navy.

[[AC:VideoGames]]
* ''VideoGame/WingCommander'' has not only a SpaceNavy, but an Air Force analog (Terran Confederation Space Force), as well. There's no real rhyme or reason as to when a carrier is host to a Navy wing or a Space Force one, and there's apparently some switching of personnel between the services (Commodore [a navy rank] Blair in ''Prophecy'' was, prior to 2681, in Space Force, which uses a modified Army rank structure). The ships themselves, however, are pure navy, and manned by navy crews.
** There's an element of TruthInTelevision to this, as some countries here on Earth have been known to go back and forth on whether their naval aviation assets should be operated by the Navy proper, seconded from the Air Force or a separate entity altogether. Britain in particular has a tradition of this sort of thing stretching back nearly as long as there have been British military aeroplanes; see UsefulNotes/TheUKArmedForces for details.
* The Systems Alliance navy from ''Franchise/MassEffect''.
* [=SolForce=] in ''VideoGame/SwordOfTheStars''. It's also the de facto government of humanity, and the director of [=SolForce=] is the closest thing to a secular leader humanity has.
* ''{{Metroid}}'' has the Galactic Federation
* ''Franchise/{{Halo}}'' features the United Nations Space Command Navy. [[PlayerCharacter John-117]] got his nickname "the Master Chief" because he's actually a Master Chief Petty Officer in the Navy.
* ''VideoGame/FreeSpace'' has the Galactic Terran Alliance and the Parliamentary Vasudan Navy. In the second game, they merge into the Galactic Terran-Vasudan Alliance.
* ''NexusTheJupiterIncident'' has the Noah colony fleet. Mostly averted in the case of ISA, which only controls space travel up to the Lunar orbit, with the rest of the Solar System being fought over by the various {{Mega Corp}}s. Your character, Marcus Cromwell, is originally an ISA pilot. After the ISA-MegaCorp war, which the former loses, Cromwell is hired by a MegaCorp called [=SpaceTech=] to captain one of their corvettes. Later on, he ends up being sent across the galaxy to Noah and becomes part of the Noah fleet command structure.
* ''VideoGame/ConquestFrontierWars'' has the Terran Navy.
* ''SinsOfASolarEmpire'' has the Trade Emergency Coalition, which is, basically, the old Trade Order retooled for warfare in the face of the Vasari and Advent invasions. Given their technological inferiority, the TEC relies mainly on its ability to [[WeHaveReserves outproduce]] the enemy. Most of the warships definitely have a "[[UsedFuture converted cargo hauler]]" look to them, a stark contrast to the ShinyLookingSpaceships of the Advent and the more alien-looking (but still curvy) Vasari ships.
* ''VideoGame/InfiniteSpace'' has a space navy for every nation you encounter: Elgava, Nova Nacio, Regeinland, Lugovalos, and more.
* WordOfGod is the United Earth of ''VideoGame/EscapeVelocity Override'' ''began'' as a space navy -- when the Voinians invaded, Admiral [=McPherson=] managed to get the various space-forces of the Earth superpowers to enter into coalition (picking up the name 'United Earth' somewhere along the way) against the Voinians ''before'' the Earth superpowers actually managed to agree on their alliance.
* Every particular race in the ''VideoGame/{{X}}-Universe'' has their own SpaceNavy, including the [[ThouShaltNotKill normally peaceful]] [[FishPeople Boron]] and [[ProudMerchantRace mercantile Teladi]], but the [[PlanetTerra Terran]] United Space Command and the [=AGI=] Task Force takes the cake. The former is a huge naval arm that serves as the primary force for the Terran State while the latter is a special forces branch dedicated to searching and eliminating any [[AIIsACrapshoot rogue AGI-controlled ship]] that dare to enter Terran territory, hence their name.

[[AC:WebComic]]
* Taken to rather literal extremes in ''{{Pockett}}'', with crew members dressed in modern looking navy uniforms.
* ''Webcomic/{{Angels 2200}}'' has the aptly named Terran Navy.

[[AC:WebOriginal]]
* ''StarArmy'' is a universe ''full'' of space navies. Almost every nation has one and they're one of the most detailed parts of the military sci-fi setting.
* "Red Vs. Blue" is a Web series that has two Space Armies fighting against each other, though most of the fighting involves no action whatsoever, and the two squads the series is focused on seem to get along fine.
[[AC:RealLife]]
* So far averted, what few space based military operations exist currently (mostly spy satellites) are under the jurisdiction of their countries' respective Air Forces.
** Not as averted as you would think. [[http://en.wikipedia.org/wiki/Naval_Space_Command US Naval Space Command]], later Naval Network and Space Operations Command.

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