Beckson Portable bilge pumps are made of sturdy ABS plastic with comfort-grip handle providing smooth firm strokes. Often referred to by their brand name, Thirsty Mate, hand bilge pumps are easy to use and reliable in any boating situation. They are often used in dinghy or sailboats, where battery / electric pumps are not an option, or as an emergency bilge pump for heavy rain, damaged battery or back-up.