Multipurpose trimaran

A boat structure (10) comprising:

• a central hull (12) having a lowermost portion (14), lateral sides (16, 18) having upper portions (20, 22) and being generally equally spaced from a central plane (24) of symmetry of the central hull (12), the central hull (12) being of a width (W) at the waterline (26) when floating at rest;
• a pair of side hulls (32, 34) having infacing sides (36, 38) having top portions (40, 42) and bottom portions (44, 46), said infacing sides (36, 38) being generally equally spaced a distance (D), which is from about two-thirds to about four-thirds said width (W) from said plane (24) over generally the length of said side hulls (32, 34), the entire bottom portions (44, 46) of the side hulls (32, 34) being spaced above the lowermost portion (14) of the central hull (12) and being positioned below the waterline (26) when said hulls (12, 32, 34) are floating at rest;
• and
• a pair of substantially horizontal port and starboard bridges (52, 54) having bottoms (53, 55) and extending substantially the length of said side hulls (32, 34), said bridges (52, 54) connecting the top portions (40, 42) of the side hulls (32, 34) to the upper portions (20, 22) of the lateral sides (16, 18) of the central hull (12), the entire bottoms (53, 55) of said bridges (52, 54) being spaced above the water line (26) when said hulls (12, 32, 34) are floating at rest.