TRAC Outdoors Portable Bilge Pump. Helps remove excess water from the bottom of Jon boats, utility boats, dinghies, inflatable boats, and other small watercraft. This pump operates using (3) D-cell batteries (not included), allowing it to serve as a back-up bilge pump during emergencies. It can also remove fluids in many non-marine applications. This product has a 250 GPH flow rate at zero head. The bilge pump runs dry without damage and can be completely submersed. Measures 5" x 5" x 12" and includes a 3/4" x 36" hose that easily reaches from the bottom of your boat to discharge water with ease. Mounts using the provided suction cups or mounting screws.