Ships – Displacement-type hull – Multiple hulls
Patent
1997-05-27
1999-09-21
Swinehart, Ed
Ships
Displacement-type hull
Multiple hulls
114265, B63B 100
Patent
active
059540087
ABSTRACT:
An upper body, forming a large deck which is always above water, and a submerged body, which is always submerged in the water, are disposed in the up-and-down direction with a certain distance therebetween. The upper body and submerged body are connected by a plurality of connecting legs. An outer peripheral portion of the upper body is formed to have a stream-lined configuration symmetric in the up-and-down direction. A middle portion of the upper body is formed to have upper and lower surfaces parallel with one another, except for the outer peripheral portion thereof. The connecting leg may include either a single hollow body or a double hollow body. The submerged body is formed to be approximately a T-shaped in vertical cross-section and has a permanent ballast fixed at bottom and side surfaces of the inside portion thereof. A permanent ballast may also be filled in a lateral connecting body which connects adjacent submerged bodies. A thruster is installed for the purpose of keeping the correct posture of the vessel and for controlling the vessel. The thruster is automatically operated by a computer having a specially designed computer program. One of the divided upper bodies or one part of the divided upper body may ascend and descend for the purpose of trafficking of cargo, passengers and crew.
REFERENCES:
patent: 1892125 (1932-12-01), Armstrong
patent: 2405115 (1946-08-01), Creed
patent: 3279407 (1966-10-01), Stenger
patent: 3430595 (1969-03-01), Tulleners
patent: 4437794 (1984-03-01), Grimsley et al.
patent: 4440103 (1984-04-01), Lang
patent: 5433161 (1995-07-01), Loui
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