For other uses, see Achernar.

STARSHIP
USS Achernar
Class:	Constitution-class
Registry:	NCC-1732
Affiliation:	Federation Starfleet
Launched:	23rd century
Status:	active (2280s)

The USS Achernar (NCC-1732) was a Constitution-class Federation heavy cruiser starship, prototype of the Achernar-subclass, ordered for construction in the 23rd century, named for the star Achernar.

Construction of Achernar was authorized by the Starfleet appropriation of stardate 5930. (TOS reference: Star Fleet Technical Manual)

The Achernar had entered service by the 2280s, by which time she had been refitted to Enterprise-class specifications and had been redesignated as a galactic survey cruiser. (TOS video game: Starfleet Command Volume II: Empires at War)

The stardate given would seem to suggest this ship was ordered during the TAS era, however this date is fairly uncertain since FASA RPG module: The Four Years War records Achernar-class vessels were in service during the 2250s war with the Klingons.

Achernar-subclass (Constitution-class mk III class I/class XI cruiser/heavy cruiser starships)
Refit with mk III engines	Bismark • Bonhomme Richard • Challenger • Constellation • Constitution • Defiant • Eagle • El Dorado • Endeavour • Enterprise • Essex • Excalibur • Exeter • Farragut • Hood • Hornet • Intrepid • Kent • Kongo • Lexington • Potemkin • Republic • Saratoga • Valiant II • Yamato • Yorktown
Built to mk III specifications	Akagi • Ark Royal • Caspan • Chikuma • Discovery • Forrestal • Kaga • Kitty Hawk • Langley • Littorio • Marseille • Radetsky • Richelieu • Rivoli • Santissima Trinidad • Sirius • Ticonderoga • Victory
Authorized for construction	Achernar • Ahzdar • Alam'ak • Alferaz • Alfr • Androcus • Annobon • Astrad • Behr'ak • Czar'ak • Ekinus • Elohim • Esabl • Eskiis • Galina • Ghar • Ghondr • Hajj • Hiemdal • Horok • Jassan • Jenshahn • Jupiter • Kars • Kasimar • Kep Salu • Kestral • Ketoi • Maat • Mazda • Mengen • Mirazh • Mondoloy • Mongo • Ndele • Oblik • Oomaru • Paegan • Pari • Pelione • Phardos • Pilar • Procyon • Proxima • Qizan • Qual'at • Quindar • Rigil Kentaurus • Salayna • Samaara • Shaandra • Shahr • Sinuiji • Sol • Tajarhi • Tali • Temir • Thelonii • Tholus • Tulan • Tutakai • Xanthii • Yaan • Za'faran • Zaahm • Zindar

Enterprise-subclass (Constitution-class class XI/class XII cruiser/heavy cruiser starships)
Federation, Starfleet	Ships of various specifications	NCC-1335 • Achilles • Apollo •Boone • Christopher Pike • Explorer • Furious • Huntington • Kelleghan • Kirishima • Lucas • Musashi • Rauer • Salazar • Somers • Tigress • Vengeance • heavy cruiser (CA): Constellation II • Goeben • Eximer • Oriskany • Republic • Reshadije • Ramilles • Constitution • Enterprise • Farragut II • rear-fire heavy cruiser (CAR): Yorktown • Exeter • Intrepid II • Valiant II • Potemkin • Monitor • Hornet • Merimac • Endeavour • Defiance • advanced heavy cruiser (CA+): Excelsior • Hood • Wasp • El Dorado • Ari • Saratoga • Tori • Krieger • Port Moresby • Pharsallus • Hastings • Arbela • heavy drone cruiser (CAD): Agincourt • Vulture • Ballista • Barr • Reprisal • command cruiser (CC): Lexington • Excalibur II • Kongo • Lafayette • Essex • heavy command cruiser (CB): Gettysburg • Kadesh • Thermopolae • Cannae • Alesia • Isandhlwana • Gravelotte • Tannenberg • Kursk • Coral Sea • Inchon • Khe Son • Golan • Alfeld • Austerlitz • Panjsher • Suomussalmi • Rocroi • Poltava • Rossbach • Gaugamela • Vincennes • Basra • fire support cruiser (CFS): Ranger • Paladin • Knight Errant • Highwayman • advanced fire support cruiser (CFS+): Fencer • Samurai • Berserker • Cavalier • tactical command cruiser (TCC): Enterprise-A • galactic survey cruiser: Achernar
	Refit to mk I specification	Enterprise • Bismark • Yamato • Challenger • Valiant II • Essex • Bonhomme Richard • Potemkin • Constellation II • Intrepid • Centurion (fm. Farragut II) • Lexington • Yorktown • Wasp • Forrestal • Republic • Akagi • Rivoli	Built to mk I specification	Excalibur II • Exeter • Defiant • Hood • Valley Forge • Oriskany • Republic II • Hancock • Minsk • Yorktown
	Refit to mk II specification	Eagle • Santissima Trinidad • Marseille • Radetsky	Built to mk II specification	Zuiho • Graf Zeppelin • Soryu • Hiryu • King George V • Prince of Wales • Franklin • Victory II • Scharnhorst • Gneisenau • Kaga II •Kashima • Freidland • Konigsberg • Clemenceau
	Refit to mk III specification	Kongo • Saratoga • El Dorado • Ticonderoga • Kitty Hawk	Built to mk III specification	Kearsarge • Bunker Hill • Chikuma • Emperador • Ukrania • Marcello • Fontana • Java
Terran Empire, Starfleet (mirror universe)		Constellation • Contemptible • Deceiver • Enterprise (refit) • Enterprise-A • Farragut • Intrepid • Nixon • Relentless