A construction in or around a harbour designed to break the force of the sea and to provide shelter for vessels lying inside.
A wooden or concrete barrier, usually perpendicular to the shore, intended to prevent the movement of sand along a coast.
A low bulkhead across the forecastle deck of a ship which diverts water breaking over the bows into the scuppers.
A partly sheltered anchorage; a stretch of water near the shore where vessels may ride at anchor, but with less protection than a harbour.