초록 ▼

A semi-submersible marine craft for operation on the surface or in a semi-submerged condition has a pair of spaced parallel tubular water ballast floats disposed horizontally on either side of a vertical middle plane. The floats are disposed symmetrically relative to a central nacelle incorporating

A semi-submersible marine craft for operation on the surface or in a semi-submerged condition has a pair of spaced parallel tubular water ballast floats disposed horizontally on either side of a vertical middle plane. The floats are disposed symmetrically relative to a central nacelle incorporating the power unit for propelling the craft and comprising a watertight cabin for the passengers. Control apparatus are provided for submerging and surfacing the craft, and the necessary control and safety apparatus for operating the craft. The floats and the nacelle have a frame structure made of an assembly of stainless steel sections which are covered by a skin of synthetic material. The nacelle has a cabin with a transparent semi-spherical front portion and side windows. On top of the cabin is hingedly mounted a dome for entry into the craft. Releasable ballast are disposed under the nacelle. Flotation control is provided by inflating and deflating air-inflatable balloons enclosed in the side tubular floats and for variably controlling the buoyancy of the craft by controlling the volumes of water ballast entering and leaving the tubular water ballast floats.

대표청구항 ▼

A semi-submersible marine craft comprising, a watertight hull having a passenger cabin made in part of transparent material, two elongate, tubular flotation and water ballast floats secured on opposite sides of the hull, the two floats having means for independently receiving volumes of water intern

A semi-submersible marine craft comprising, a watertight hull having a passenger cabin made in part of transparent material, two elongate, tubular flotation and water ballast floats secured on opposite sides of the hull, the two floats having means for independently receiving volumes of water internally thereof and discharging the water therein, flotation control means for variably controlling the buoyancy of the craft by controlling entry of water into the flotation and water ballast floats and discharge of water therefrom for variably controlling volumes of water ballast in the floats to control extent of partial submergence of the craft including the hull and surfacing thereof, the water ballast effectively partially submerging the craft hull for viewing from the passenger cabin below the water surface in a partially submerged condition of the cabin, the flotation control means including other ballast below the level of the floats, means for jetissoning said other ballast, a driven propulsion shaft having a drive screw driven rotationally from internally of the hull, and drive means internally of the hull for rotationally driving said drive shaft for driving the marine craft forwardly and astern.