Grillage for a boat

Claim 1

Grillage for a boat of the type having a hull including, bilge, gunwale, bow, and stern portions, dividing a cockpit, comprising: A. a grid complementally conformed with the bilge interior and having: i. a peripheral flange, and ii. a plurality of longitudinally extending flotation compartments being alternately opened to said bulge interior and said cockpit, so as to support air pressurized floats above and beneath said grid and said longitudinally extending compartments being balanced with each other on either side of the boat''s center line; B. a plurality of independent, air pressurized floats supported within the flotation compartments, so as to extend parellelly with the center line of said boat, said floats being trapezoidal in cross-section, so as to be wedged into said longitudinally extending compartments within said bilge and stern portions; C. a sternwell compartment disposed across the center line of said boats; D. a fiberglass mat covering pressurized floats within said longitudinally extending and sternwell compartments; E. a deck covering for the top of said grillage including: i. a fiberglass mat secured at its periphery to engage said bilge and said flange and secured at its median portions to said grillage and said pressurized floats; ii. a plywood sheeting secured on top of said mat and configured to said bilge interior; and iii. a fiberglass mat secured above said plywood sheeting and against said bilge so that said grillage, pressurized floats, said deck covering, and said bilge are unitary; F. a center line flotation compartment longitudinally extending from the bow to said sternwell and being deeper than said other compartments, so as to accommodate a deeper pressurized float.