Johnson submersible cartridge bilge pump. 73 LPM - Made in USA. Heavy duty submersible bilge pump - 73 LPM - 12 volts Up to 73 LPM (litres per minute) - 1150 GPH (gallons per hour) Rating: 3 Amps Fuse size 5 Amps The bilge pump casing can remain attached to both the boat and the hoses during cleaning and maintenance - no tools are required. Water cooled for extended service - discharged water is circulated around the pump motor for cooling. Does not include Dura-Port connection. Heavy duty pump motor with stainless steel shaft and tough thermoplastic body provides for a long pump life. With the Johnson Bilge Pump Automatic Switch installed, the bilge pump automatically comes on when there is water in the bilge and shuts off when the bilge is dry. Submersible bilge pumps must not be run dry and are not self-priming and must be run in the deepest part of the bilge.