IN COCKPIT FLOOR THERE IS A 18 X 24 HATCH WHEN PULLED UP FOUND SMALL WHITE 12 X 12 BILGE PUMP AND FLOAT ,FULL OF WATER FLOAT UP IS THIS FOR SINKS ? WHERES SWITCHES AND FUSES ?,,,,ALSO FOUND A VALVE SHUT FORWARD OF WHITE SMALL BILGE TANK ON PORT SIDE IS IT FOR OVER BOARD FOR MACERATOR?