°A temporary watertight structure that is pumped dry to enclose an area underwater and allow construction work on a ship, bridge, or rig to be carried out; a caisson.
°(nautical) An empty space that acts as a protective barrier between two floors or bulkheads on a ship.
°A temporary watertight structure that is pumped dry to enclose an area underwater and allow construction work on a ship, bridge, or rig to be carried out; a caisson.
°(nautical) An empty space that acts as a protective barrier between two floors or bulkheads on a ship.