Endeavour is designed to comfortably accommodate a crew for 3-6 month missions (up to twelve months in an emergency). The ship is equipped to cover multiple mission requirements with labs across various scientific disciplies to allow in-field analysis. During missions the ship is capable of supporting itself without needing to return to base, including performing maintenance and repairs.
Each deck is self-contained, so that loss of containment on one deck will not impact another deck's peration, apart from shared life support systems (where deck-specific backup systems would operate).
Endeavour's design incorporates three types of internal space to maximise survivability.
A heavily armoured central citadel includes internal armour and blast doors separating the citadel from other internal spaces. All critical systems are located within the citadel, which is designed to allow operation and maneuvering even if the rest of the vessel is heavily damaged.
Living quarters, labs, cargo storage and other non-critical spaces take up the bulk of the vessel's volume. These spaces are protected by armour but are designed so that damage to these areas will not be critical to survivability.
Forward sections of the vessel are isolated from secondary spaces via an armoured firewall. These spaces typicall contain low-priority spaces. Tertiary spaces are designed to take initial impact of incoming fire or damage.
Endeavour has seven decks and a flight deck.
Deck one contains the ship's command centre - the bridge.
The shuttle dock provides direct access to shuttle craft and a decontamination facility for crew returning from away missions.
Deck two contains scientific labs, cargo bays and a data centre.
Pre-mission suport facilities include a briefing room, crew staging area and armoury, connecte directly to the shuttle dock via a dedicated stairwell.
A security office supports the shuttle dock including holding facilities.
Deck three contains the vessel's main cargo bays.
Two of the vessel's torpedo tubes are located on this deck.
The impulse engine room is accessed from this deck.
The vessel's medical facility is located on deck four, including a medical lab.
Officers quarters are located forward of the citadel.
Crew quarters are located on deck five, along with the galley - the main dining area for crew.
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