For an overview of playable starships within Star Trek Online, see the Playable starship article
There are many types of non-playable starships for each faction, ranging from civilian freighters to enemy warships that the player must overcome in space combat. Players will encounter these ships while in space, either when running missions or traveling between star systems.
Fighters (also known as shuttles or small craft) are the weakest NPCs found on space maps. Equivalent to Neophytes, they are even weaker than frigates and are no match for players. Some fighters, such as the OrionInterceptor, are launched from higher-level ships (carriers).
A Federation Peregrine Fighter
A Klingon To'Duj Fighter
A Romulan Scorpion Fighter
A Tholian Widow
A Jem'Hadar Fighter
Frigates (also known as Corvettes or Light Cruisers) are small, maneuverable vessels used by almost every faction. They are generally the weakest NPC vessels in the game (aside from Fighters), and as such they typically appear in groups of three. Frigates generally carry three or four weapons and only a couple of abilities.
A Federation Miranda-class Frigate
A Klingon Hegh'ta-class Bird-of-Prey
A Romulan T'varo-class Light Warbird
A Tholian Mesh Weaver
A Jem'Hadar Attack Ship
Science Vessels are ships with small hull and strong shields, they also have a small crew, but are also faster but less maneuverable than frigates.
A Federation Reconnaissance Science Vessel
A Tholian Orb Weaver
Escorts are vessels with a small hull and weak shields. They also have a small crew, but are also faster and much more maneuverable than frigates.
Cruisers are ships with large hull and medium strong shields, they also have a large crew, but are also slow and less maneuverable than frigates.
A Federation Galaxy-class Cruiser
A Klingon K'Tanco-class Battle Cruiser
Battleships are the second most powerful NPC vessels used by factions, outgunned only by the dreadnought. They have very strong hull and shields, five or six weapons slots, and a wide range of abilities. To compensate for all their power, battleships are very slow and not at all maneuverable. Some battleships, such as the Breen Capital Ship, are carriers capable of launching fighters.
Dreadnoughts are the most powerful (conventional) NPC ships in the game. They are comparable to battleships in terms of speed and weaponry, but they have much stronger hull and shield strength. They are dangerous and resilient to the point where defeating a dreadnought usually requires more than one ship (player or NPC regardless). Some dreadnoughts, such as the Klingon Vo'quv, are carriers capable of launching fighters.
A Federation Galaxy-X-class Dreadnought
A Klingon Vo'Quv-class Dreadnought
A Romulan Scimitar-class Dreadnought
A Tholian Tarantula
A Jem'Hadar Dreadnought
Capital ships are the most powerful NPCs in the game and some of them do not belong to any specific faction. This rank is not given to conventional ships, but only to very specific NPCs whose power and abilities surpass and are unlike any other ship in the game. Capital ships usually cannot be defeated in conventional ways, and require special tactics.