This hydroplane is part of the R.A.F. rescue service in the Middle East. It operates on the lakes of the Nile Delta for the assistance of pilots who may make forced landings in the water. Consisting of a cabin mounted on seaplane floats it is driven by an aircraft engine and propeller mounted in the stern and steered by an aircraft rudder. There are also rudders on each of the floats. The top speed of the craft is about fifteen knots. Photo taken on March 11, 1942.