Editing Ship prefix (section)

== In science fiction ==
Fictional equivalents of tri-letter prefixes frequently appear in English-language science fiction works, applied to seafaring and spaceborne ships alike.  
* ''[[Star Trek]]'' – the [[United Federation of Planets]] uses the prefix "USS" for its starships. Dialogue in earlier episodes of the series indicated that it referred to "United Space Ship".<ref>Star Trek episode "Space Seed", Season 1 Ep 22, scene with McCoy and Khan in sickbay (1967-02-16).</ref> In the alternate "[[Mirror Universe]]", the Terran Empire use an "ISS" prefix instead. Other races use different prefixes for their ships:
** [[Klingon]]s use IKS (Imperial Klingon Ship) or IKC (Imperial Klingon Cruiser).
** [[Romulan]] vessels typically receive the prefix IRW (Imperial Romulan Warbird), or RIS where some speculate that it means "Romulan Imperial Ship", and ChR. (ChR is from novelist [[Diane Duane|Diane Duane's]] imagining of the ''Star Trek'' Universe, in which the Romulans refer to their home planet as "Ch'Rihan". Though Duane's version has a loyal following among many fans, it is not considered official ''Star Trek'' canon; similarly, the [[Ferengi]] designation of FMS, and the [[Cardassian]] CDS, are also not canon.)
* ''[[Star Wars]]'' – The [[Galactic Empire (Star Wars)|Galactic Empire]] sometimes uses the prefix ISD for [[Imperial Star Destroyer]].
* ''[[Babylon 5]]'' – The [[Earth Alliance (Babylon 5)|Earth Alliance]] uses the prefix "EAS" for "Earth Alliance Ship". Some fan material also uses it for "Earth Alliance Station".
* ''[[Elite: Dangerous]]'' – The Federation uses the prefix "FNS" (Federal Naval Ship) for some military ships. The Empire uses "INV" (Imperial Naval Vessel). The alliance uses "ADF" (Alliance Defense Force).
* ''[[Firefly (TV series)|Firefly]]'' – Vessels in the [[Union of Allied Planets]] fleet are given the prefix "IAV", for Interstellar Alliance Vessel.
* ''[[Wing Commander (franchise)|Wing Commander]]'' – The [[Terran Confederation (Wing Commander)|Terran Confederation]] uses TCS (Terran Confederation Ship) for its vessels.
* ''[[Halo (series)|Halo]]'' – [[United Nations Space Command]] spacecraft use the prefix "UNSC". The Covenant use three letter designations for ship class such as CAS or CSO
* ''[[Mass Effect (series)|Mass Effect]]'' – features several prefixes, primarily "SSV" for "Systems Alliance space vehicle"<ref>In-Game Codex, entry for SSV ''Normandy''.</ref> and "MSV" for "Merchant Space Vehicle", used on numerous human commercial ships, as well as "PFS" for a Turian Hierarchy naval craft, and a freighter AML ''Demeter'' of unknown affiliation.
* ''[[Dead Space (series)|Dead Space]]'' – "USG", standing for "United Spacefaring Guild", which oversees civilian spacecraft operation, including the planet-cracker class leader USG ''Ishimura'' of the Concordance Extraction Corporation; "USM" for the Earth Defense Force of EarthGov; and "CMS" for its predecessor, the Sovereign Colonies Armed Forces.
* ''[[StarCraft: Brood War]]'' – The United Earth Directorate uses DSS (presumably for Directorate Space Ship, e. g. ''DSS Aleksander''); the Terran Confederacy used CSF (Confederate Space Fleet, e. g. ''CSF Ragnorak'') for their battlecruisers.
* ''[[Killzone (series)|Killzone]]'' – The Interplanetary Strategic Alliance (ISA) uses "ISC", for Interplanetary Strategic Cruiser.
* ''[[The Moon is a Harsh Mistress]]'' – The Federated Nations use "FNS", presumably meaning "Federated Nations Ship".
* ''[[Alien (franchise)|Alien]]'' – The ships use prefix "USCSS" for "United States Cargo SpaceShip" on the Nostromo, Prometheus, and Covenant.
* ''[[The Lost Fleet]]'' – The Alliance use the prefix "ASN" for "Allied Systems Navy" (or possibly "Alliance of Systems Navy"), the Syndicate Worlds do not use prefixes.
* ''[[CoDominium]]'' – CoDominium vessels use the prefix "CDS" for CoDominium Ship.
* "[[Honorverse]]" – The Manticoran kingdom uses "HMS" as a prefix, the Graysons use "GNS"(Grayson Navy Ship), and the Havenite ships use "PNS" (People's Navy Ship) and later "RHNS" (Republic of Haven Navy Ship), being reflections of actual ship prefixing traditions, and mirroring the Napoleonic wars. The Solarian League uses "SLNS" (Solarian League Navy Ship) and the Andermani Empire uses "IANS" for Imperial Andermani Navy Ship. 
* ''[[The Culture]]'' – Ships are identified by a three-letter prefix denoting class (such as GSV for "General Systems Vehicle" or ROU for "Rapid Offensive Unit"), followed by their personal name.
* ''[[The Expanse (novel series)|The Expanse]]'' – Ships of the United Nations Navy use the prefix "UNN," while ships of the Martian Congressional Republic Navy are prefixed with "MCRN". The Nauvoo, a [[generation ship]] commissioned by the [[Church of Latter Day Saints]] was prefixed with "LDSS" for "Latter Day Saints' Ship", and later changed to "OPAS" and re-christened as the "OPAS Behemoth" representing the Outer Planets Alliance.
* ''[[Unreal Tournament]]'' – Ships mentioned there have prefixes such as ITV ("Interstellar Transport Vessel", the first non-tutorial match in the tournament happens on board of ''ITV Oblivion'') and ISV ("Interstellar Science Vessel", ship's name being ''ISV-Kran'' from ''[[Unreal (1998 video game)|Unreal]]'').
* ''[[Return to Na Pali|Unreal: Return to Na Pali]]'' – ISV (''ISV-Kran'') and UMS ("Unified Military Services", a prefix for warships).
* ''[[The Orville]]''—The Planetary Union uses the prefix "USS", presumably for "Union Space Ship" (in homage to ''Star Trek'').
* ''[[Treasure Planet: Battle at Procyon]]'' - The Terran Empire uses the prefix RLS, which stands for Royal Light Ship; this is also a direct homage to [[Robert Louis Stevenson]], author of the original ''[[Treasure Island]]''. The Procyon Expanse uses the prefix PSR, which stands for Procyon Star Runner.
* ''[[Destroyermen]]'' - the Grand Alliance uses the "USS" prefix, since all Allied warships are run by the Americaan (sic) Clan. The Alliance's only airship is given the prefix "UHAS" (United Homes Air Ship). The Empire of New Britain Isles uses "HIMS" (His/Her Imperial Majesty's Ship). The Republic of Real People uses "RRPS" (Republic of Real People Ship). The New United States uses "NUSS" (New United States Ship). Neither the Holy Dominion nor the League of Tripoli use prefixes, although the KMS ''Hessen'' is mentioned once, it is not clear if the prefix is internally used or not.
*''[[Titanfall]]'' - The Interstellar Manufacturing Corporation, the main antagonists of the series, use the "IMS" prefix. The origin of this prefix is unknown.
*''[[FreeSpace]]'' - Various ship prefixes are used depending on the species, faction allegiance, and class of the vehicle. Prominent examples include: "GT" and "GV" for "Galactic Terran" and "Galactic Vasudan" respectively, "NT" for "Neo-Terran," "PV" for "Parliamentary Vasudan," and just "S" for "Shivan." These are then further supplemented with a type of ship identifier following the species and faction prefixes, such as "B" for "Bomber," "C" for "Cruiser," "Cv" for "Corvette," "D" for "Destroyer," and "F" for "Fighter," among many examples. As such, "PVD" would indicate a "Parliamentary Vasudan Destroyer," "NTF" would indicate a "Neo-Terran Fighter," "GTC" would indicate a "Galactic Terran Cruiser", "GVCv" would indicate a "Galactic Vasudan Corvette," and "SB" would indicate a "Shivan Bomber."
*"[[Helldivers 2]]" - "SES" is used for "Super Earth Ship"