Watchkeeper

Locked: prestige hull reserved for members of a faction that has earned the "Fully Armed and Operational" achievement.

Large factions eventually discover that a fleet can run out of people while every ship still has fuel. The Watchkeeper grew out of the scheduled relief runs between their busiest ports: fresh engineers outbound, exhausted watches returning, personal trunks tied down beside replacement uniforms. Most of the hull is accommodation. The operating crew works from a small forward deck, leaving the bunks, messes, and embarkation passages to the people in transit. Duty rosters hang beside the airlocks so arriving captains can find their replacements without waking an entire compartment. On the return leg, the mess stays open through every watch change.