Apparatus for transferring buoyancy in a nautical vessel

Details Apparatus for transferring buoyancy in a nautical vessel Apparatus for transferring buoyancy in a nautical vessel

1992-03-16

1994-05-10

Basinger, Sherman

Ships

Ballasting

Water tanks

114140, B63B 3903

Patent

active

053098579

ABSTRACT:
An apparatus is provided for reducing the extent of heel of a nautical vessel by applying a buoyant righting moment on the leeward side of a hull of the vessel. Supports are coupled to and extend laterally beneath the hull and carry hollow bulbs on their extremities. The bulbs on both sides of the vessel are each divided by fore and aft partitions into inboard and outboard chambers. A passage is defined between the inboard chambers and a separate passage is defined between the outboard chambers. A first fluid fills the outboard chambers and the passage therebetween, while a second fluid having a specific gravity different than that of the first fluid fills, the inboard, chambers and the passageway therebetween. A sensor and actuator responsive to heel of the hull selectively shifts a portion of the first fluid from the outboard chamber of a first one of the bulbs to the outboard chamber of the other of the bulbs and concurrently shifts a portion of the second fluid from the inboard chamber of the other bulb to the inboard chamber of the first bulb. A buoyant fluid, such as air, can thereby be shifted to an outboard chamber beneath the leeward side of a heeling vessel to exert a righting moment to counter the heeling force of the wind.

REFERENCES:
patent: 3604386 (1971-09-01), Turci
patent: 3741145 (1973-06-01), Braddon
patent: 4541356 (1985-09-01), Jones

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