Pontoon system for supporting watercraft on a body of water

Details Pontoon system for supporting watercraft on a body of water Pontoon system for supporting watercraft on a body of water

1975-11-28

1977-04-19

Blix, Trygve M.

Ships

Vessel raising and docking

Floating dry docks

61 65, B63C 106

Patent

active

040181790

ABSTRACT:
A pontoon system for supporting watercraft on a body of water having a submersible structure comprised of pontoons into which air is injected expelling the water therefrom to provide lift for the system, and a frame which maintains the pontoons in fixed spaced relationship. The frame includes support pads which extend upwardly therefrom and which contact the hull and keel of the watercraft for support purposes. The pontoons are divided into chambers by bulkheads which allow the water to be forced from the front portion of the pontoons first. Thus, the front of the watercraft is lifted initially which stabilizes the watercraft and the pontoon system before the usually heavier aft portion of the watercraft is lifted; this reduces the possibility that the watercraft will become unstable during the lifting process. Air may be released from said pontoons for lowering the pontoon system into the water. A safety system is provided to lower the system into the water if a leak develops.

REFERENCES:
patent: 1372394 (1921-03-01), Beckert
patent: 3315627 (1967-04-01), Roberts
patent: 3362172 (1968-01-01), Rutter
patent: 3448712 (1969-06-01), Lehmann et al.
patent: 3603276 (1971-09-01), De Lisle
patent: 3727415 (1973-04-01), Williams
patent: 3895592 (1975-07-01), King

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