Hull construction for water craft - has submerged and above-water ships, with connecting min. flow-resistance frame work, and floats

摘要

The watercraft has a ship body of superstructure above water, and submerged floats. The above-water ship (95,97) is connected via a framework (90) to the submerged ship (80). The framework has min. flow resistance. The submerged ship (80) has a volume, with the corresponding weight of displaced water between above 100 and below 120 percent of the max. gross weight. This is given by max. load, above-water ship, frame, and submerged ship. The submerged ship has at least two floats, and either has a cross section, decreasing in size towards the back. Each consists of a tubular cylindrical section, with reduced size bow and stren. The submerged floats contain cargo holds, machine room, ballast hold, etc. A control device floods or drains chambers in the submerged ship, for optimum draught. USE - Ship with submerged floats gives reduced water wave impact and reduced water resistance, and is more stable than conventional ships.