Easy to Use - Handy to Have. Perfect for emptying out those last dregs in the bilge, or water tanks, or aquariums, this battery-powered lightweight portable pump has a solid intake pipe that can be poked into awkward spaces and through narrow inspection hatches. With a bit of ingenuity, it could also be rigged as a semi-permanent bilge pump in a rowing boat. Using two D-cell batteries (option to purchase batteries will appear in your shopping basket) it pumps 10-litres per minute. The clear, flexible discharge pipe is 26" long.