双胴型フェリによる国内雑貨輸送の可能性

Abstract

In our country, general cargo transportation is shared progressively by the autotruck, and, at present, which is going to conquer completely the cargo vessel and the railroad. In order to recapture the transportation demand of general cargo, therefore, the marine tranporter is forced to devise countermeasures coping with the autotruck. When the shipper can use several transportation measures, he chooses one from them to minimize his shipping cost. Among many factors influencing the shipper's cost two factors are considered to be important. The one is the transportation performance which is expressed as the energy consumption per a unit transport, that is, kcal/ton·km, and the other is the total transport time, that is, the door-to-door time. From the viewpoint of above shipper's cost, this paper proposes the catamaran ferry as one of such countermeasures. Because the catamaran has a wide deck area which makes it possible to ameliorate the transportation performance, and the ferry can transport general cargo with high speed enough to compete with the autotruck. A case study is carried out to reveal these merits. In the case study, the transportation performance and the total transportation time of the catamaran ferry are compared with those of the autotruck and the container vessel in regard to model routes in the SETONAIKAI region.