Convertible vessel

Details Convertible vessel Convertible vessel

2005-09-27

2009-12-22

Avila, Stephen (Department: 3617)

Ships

Displacement-type hull

Multiple hulls

C114S061180

Reexamination Certificate

active

07634971

ABSTRACT:
A vessel includes an heavy loaded catamaran, one or several movable buoyant roll-on/roll-off platform(s) (3); a moving element is provided for draft variation in heavy deep seas so that the platform(s) (3) may be raised or lowered between the hulls thereby selectively changing the flotation of the vessel. In the upper position, the vessel is a deep-sea catamaran, in an intermediate position the platform(s) is buoyant and a canal is formed between platform bottom and catamaran keels, in the lower position, platform bottom and catamaran are even-keel converting the catamaran in a shallow water craft, in the lowest position, the catamaran is raised above water for docking.

REFERENCES:
patent: 3835802 (1974-09-01), Vernede et al.
patent: 5493989 (1996-02-01), Anderson et al.
patent: 5921195 (1999-07-01), Yilmaz
patent: 6877450 (2005-04-01), Schmidt et al.
patent: 2002/0164231 (2002-11-01), Lucas et al.
patent: 2003/0033967 (2003-02-01), Hayman
patent: 198 38 374 (1999-07-01), None
patent: 1457416 (2004-09-01), None
patent: 2450192 (1980-09-01), None
patent: 2620677 (1989-03-01), None
patent: WO 2004/043546 (2004-05-01), None

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