دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the foremost bulkhead that extends from the bottom to the freeboard deck of a drill ship. It keeps the main hull watertight if a collision occurs.

n: the length of a ship or mobile offshore drilling rig that may be flooded without its sinking below its safety or margin line, usually a few inches below the freeboard deck.

n: the vertical distance between the waterline and the freeboard deck on a ship, boat, or floating offshore drilling rig. Draft plus freeboard equal total height of vessel.

n: the uppermost continuous deck on a ship or floating rig that has a permanent means of closing all openings to the sea.