The sea water pump is used for pumping salt water into the command module for desalting and drinking after splash down in the event the CM drinking water system failed and reserved stores of potable water became depleted. The sea water pump is stowed in a beta cloth container in a locker on the aft bulkhead. The pump consists of an intake hose, a guide fitting, a bellows pump with one way valves, and a discharge hose.
This pump was flown on the Command Module Columbia during the Apollo 11 mission. Unused, it was transferred to the Smithsonian in 1970.