The fastest passenger and car ferry in Japan, which can carry 423 passengers and 106 cars, has been completed. The Ship can be operated at a speed of more than 42 knots which is about twice that of a conventional car ferry and now in commercial service on the Tsugaru Channel between the Honshu Island and Hokkaido Islands. The technical features are as follows. (1) Newly developed slender deep-V form mono- hull. (2) A tough light weight construction using high tensile steel in the main hull and aluminum alloy in the superstructure. (3) A reliable high-power propulsion system plant consisting of 4 high-speed diesel engines and 4 individually steerable water jet pumps.