Escape trunk
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An escape trunk is a small compartment on a submarine which provides a means for crew to escape from a downed submarine; it operates on a principle similar to an airlock, in that it allows the transfe
View inside a submarine escape trunk, looking up from below the lower hatch
Compartment (ship)
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A compartment is a portion of the space within a ship defined vertically between decks and horizontally between bulkheads. It is analogous to a room within a building, and may provide watertight subdi
Transverse bulkheads appear horizontally in this photo of the battleship USS South Dakota (BB-57) under construction.
These compartments are formed by non-structural bulkheads.
A watertight hatch with the door dogs clearly visible