BOARD, among seamen. To go aboard, signifies to go into the ship. To slip by the board, is to slip down by the ship's side. Board and board, is when two ships come so near as to touch one another, or when they lie side by side. To make a board, is to turn to windward; and the longer your boards are, the more you work into the wind. To board it up, is to beat it up, sometimes upon one tack and sometimes upon another. She makes a good board, that is, the ship advances much at one tack. The weather board, is that side of the ship which is to windward.