U.S. Navy PBR31 MkII 'Pibber'. It was 31' 11" long ; 11; 7" wide, and 9'9" high above the waterline. It displaced 8 3/4 tons loaded drawing two feet of water. The engines were located underneath the aft decking, and the boat was steered by two movable nozzles below the water line, mounted on the rear transom.