Leave for several hours (sloshing around at sea is ideal). Pump out bilge water and dispose of responsibly. Engine & bilge cleaner is a powerful degreaser and brilliant for cleaning concrete floors.
Other uses include Cleaning / Degreasing Garage and Workshop Floors, Engines, Chassis, Machinery, Motor Bikes, Plant and Driveways.
This product is used by the pearling industry in Broome because of its non-toxic properties. Add a couple of litres of engine & bilge cleaner to every 25ltrs of bilge water.