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
A deck is a permanent covering over a compartment or a hull of a ship. On a boat or ship, the primary or upper deck is the horizontal structure that forms the "roof" of the hull, strengthening it and
Compartment (ship)
…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 subdivision of the ship's hull important…
The upper deck of the Falls of Clyde is iron; a centre strip is planked with wood as a sort of walkway. As is typical for a late-19th-century vessel, several deckhouses may be seen.
Crew and passengers on the wraparound deck of RMS Queen Mary 2, an ocean liner
Weather deck of the Swedish 17th-century warship Vasa looking aft toward the sterncastle