Manual and automatic bilge pumps, whether submersible centrifugal pumps or remotely mounted diaphragm pumps, cannot completely clear a bilge of water.  Typically 1-3" of water remains.  In a shallow bilge boat like the Catalina 25 used for this prototype system, this can lead to a substantial volume of water remaining in the bilge.  Water in the bilge can cause serious problems on many boats, including causing wood stringers to rot... Continue Reading →