The brackets or projecting parts which rise out of the barrel or main body of the capstan, like buttresses, to enlarge the sweep, so that a greater portion of the cable, or whatever rope encircles the barrel, may be wound about it at one turn without adding much to the weight of the capstan. The whelps reach downwards from the lower part of the drumhead to the deck. The pieces of wood bolted on the main-piece of a windlass, or on a winch, for firm holding, and to prevent chafing, are also called whelps.