the raised portion of the sides of a vessel around the main deck to prevent crew, cargo, and passegers from being washed overboard
steel or wooden wall round the ship's sides, giving protection to the deck.
The protective structure, lip, or railing that surrounds open, exposed deck areas of a ship. Scuppers (openings) are provided in bulwarks to allow for drainage of seawater or accumulated deck water.
fence-like guard along edge of deck
The sides of a boat above the upper deck.