Forward deck construction for a swath or catamaran-type vessel
AssigneeSwath Ocean Systems, Inc.
InventorsNelson W. Hall, Gregory Smith
Life of this patent
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Abstract
The forward deck of a swath or catamaran type vessel is constructed largely of a sieve-type material, such as honeycomb-type deck grating. Should the foredeck of the vessel, which is normally suspended above the water line become submerged by plowing into a wave, or otherwise inundated by large masses of green water which would otherwise tend to weight the bow of the vessel down, the above deck water will simply drain through the sieve-type material and permit the inherent flotation of the pontoons and hull of the vessel to promptly raise the bow to relative horizontal position.
Claims2
In a swath (small waterplane area twin hull) vessel of a type having the forward deck of its superstructure normally supported above the water line by the buoyancy of the vessel's totally submerged pontoons and associated upwardly extending struts, the combination comprising:
- the length of the vessel combined with the flotation characteristics and construction of the underwater pontoons being such as to allow the bow of the vessel to at least occasionally plough into oncoming waves so as to submerge and inundate said bow in green water;
- the said normally above water superstructure including a relatively flat and spacious forward deck area;
- at least about 30% of the deck area being constructed of a rigid, open cell, pedestrian walkway type grating having sufficient rigidity and structural strength to accommodate normal pedestrian traffic, whereby inundating water above deck can flow directly through said material and permit buoyancy forces of the vessel to promptly raise the bow and said forward deck to above the water line.
Dependencies are inferred from the claim text.