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USS Lexington.jpg
Affiliation: Federation, Starfleet
Type: Explorer
Service period: 2378-present
Length: 560 meters
Width: 280 meters
Height: 158 meters
Decks: 32
Crew: 450 (65 officers, 385 enlisted),
maximum evacuation capacity: 4500
Maximum speed: Warp 9.6 for 12 hours,
Warp 9.885 (emergency speed)
Cruising speed: Warp 6
Armaments: 7 phaser arrays,
quantum torpedoes,
photon torpedoes
Defences: FSS-3 Primary Force Field and Deflector Control System
Auxiliary craft: Federation shuttlecraft

The Allegiance-class was a Federation starship class that was developed in the late 24th century, it was an explorer. The Allegiance-class shared a similar design lineage to both the Galaxy-class and Sovereign-class explorers, taking elements from both successful designs.

The original design is by Dak Phoenix. The modified design for Star Trek: Odyssey is by Phill Hogg and has differently shaped nacelles.

Construction history[]

Keel laydown[]

Notable ships[]

Technical information[]


This class has the traditional saucer-shaped primary hull and cigar-shaped engineering hull and dual warp nacelles attached to the engineering hull by pylons.

The warp nacelles on the Odyssey model differ from the original design.

There are 32 decks (not counting non-habitable machinery areas).


Ships of this class typically have a crew of 450, 65 officers, 385 enlisted. Depending on missions, this can be expanded to 850.

They do not typically have civilian families on board. Its maximum evacuation capacity is 4500.


Ships of this class have a cruising speed of warp 6. Maximum speed is warp 9.6 for 12 hours. Emergency speed is warp 9.885 for a maximum of 10 minutes.