| STARSHIP | |
| |
| Name: | Poseidon |
| Registry: | NCC-1538 |
| Class: | Hermes |
| Affiliation: | Starfleet |
The USS Poseidon (NCC-1538) was a Hermes-class starship in Federation Starfleet service during the mid-23rd century. It was active during the Four Years War. (Axanar) In late 2244, an Andorian Starfleet officer, Thalek, transferred from Poseidon to the Ares-class USS Janus, which had an all-Andorian crew. (Axanar: "Why We Fight")
| Hermes-class starships |
|---|
| USS Aeolus - USS Anubis - USS Batidor - USS Bowie - USS Bridger - USS Carson - USS Cody - USS Crockett - USS Diana - USS Hermes - USS Quintillus - USS Revere - USS Sacajawea - USS Spaker - USS Tonti |
| Monoceros-subclass: USS Aries - USS Camelopardus - USS Canis Major - USS Canis Minor - USS Equulus - USS Leo - USS Leo Minor - USS Lepus - USS Lupus - USS Lynx - USS Monoceros - USS Pegasus - USS Taurus - USS Ursa Major - USS Ursa Minor - USS Vulpecula |
| Cygnus-subclass: USS Albany - USS Apus - USS Aquila - USS Columbia - USS Corvus - USS Cygnus - USS Grus - USS Pavo - USS Phoenix - USS Tucana |
| Pegasus-subclass: USS Pegasus - USS Tang |
| Cloak and Dagger: USS Adventure |
| Axanar: USS Apollo - USS Atlas - USS Charon - USS Hermes - USS Poseidon - USS Triton - USS Zeus |
| USS Calypso |