Poseidon

The Poseidon is a modified Normandy-class Heavy Stealth Frigate commanded by Alan Shepard, named after one of the twelve Olympian deities of the pantheon in Greek mythology. Aside from Alan, his crew included XO Tiberpius Adranianus and mechanic Yvonne Sutherburg.

Deck 1

 * Captain's Cabin

Deck 2

 * Bridge
 * Combat Information Center
 * Briefing/Communications Room

Deck 3

 * Executive Officer's Offices
 * Crew Quarters
 * Kitchen
 * Medical Bay
 * Observation Deck
 * Bio-Lab
 * Bathrooms
 * Life Support Control

Deck 4

 * Engineering
 * Research and Tech-Lab

Deck 5

 * Armory
 * Cargo Room
 * Hangar Bay

Crew
Squad Members: Notable Crew:
 * Alan Shepard ― Commanding Officer
 * Tiberpius Adranianus ― Executive Officer
 * Yvonne Sutherburg ― Chief Engineer
 * Silia Ramso ― Gunnery Officer
 * Ocrapo Kar'codah ― Science Officer
 * Grolya Bros'saprak ― Armory Officer
 * Bapril Kren'restar ― Pilot
 * Tevus Phoscus ― Chief Navigator
 * Angelica Shilling ― Medical Officer
 * Oppilus Palinian ― Shuttle Pilot
 * Matilda Quinby ― Yeoman, Communications Specialist and Procurement Specialist

Novels

 * Mass Effect: Horizons (First appearance)