Rule 2000 Bilge Pump For Boats 12 Volt Fully Submersible Heavy DutyFREE POST AUSTRALIA WIDE! These heavy duty pumps are engineered to commercial standards and are the world's largest selling high capacity submersible DC electric bilge pumps the choice of Yachtsmen and commercial fishermen worldwide. They feature double insulated, dual water air cooled motors manufactured by Rule specifically for marine pump use. They are ignition protected (won't create a spark) and they won't burn out if run dry for short periods.