Abstract

Sea Bus is a mass marine transit system designed in preference to a fixed structure across a 1.75-nautical mile body of water. The floating terminals of bonded post-tensioned concrete are designed to accommodate an extreme tidal range of 17 ft. They are E-shaped with two slips per terminal. The aluminum passenger vessels are double-ended catamarans powered by four steering right-angle drives placed at the ends of each demihull. These power units extend through the keel. The 400 passengers on the ships disembark and 400 more come aboard simultaneously through 12 sets of matching ship-terminal doors. The loading-unloading operation takes about 40 sec. Operation with two vessels over 31/4 years (17 June 1977 to 17 Sept 1980) has indicated an extremely reliable operation with a mechanical dispatch reliability of greater than 0.999. The worldwide market for energy, labor, and capital-efficient mass marine transit systems to replace bridges and tunnels which merely promote energy, labor, and capital waste is staggering. Sea Bus as is, and in modifiable form, is applicable in many of these potential world market areas.

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