The Semi-Submerged Catamaran (SSC) has been expected as a new type of promising marine vehicle to break the various performance limitations imposed by the conventional monohull or the conventional catamaran vessel.
This paper introduces the outline about the characteristics of SSC performance and the design conceptions on her propulsion system in addition to the outline of the commercial prototype of SSC ferry for 446 passengers, which had been completed for the first time in the world at the end of August, 1979 at Chiba Yard of Mitsui Engineering & Shipbuilding Co., Ltd.
