Abstract: The present invention relates to a water craft (10) having two spaced hulls (18, 20) and a tunnel (22) defined therebetween. The water craft (10) is provided with a hydrofoil section (38) extending between the hulls (18, 20) and across the tunnel (22). The tunnel facing side of each hull (18, 20) is provided with a recess (50) which extends from a position rearward of the bow (24) of the water craft (10) to the stern (26) of the water craft (10). Each recess (50) includes a side wall (52) which extends upwardly from the keel line of each hull (18, 20) and an upper wall (56) which is inclined downwardly in the direction of the stern (26). Each recess (50) is further provided at a rearward portion thereof with a skirt (58) positioned inboard of the side wall (52) so as to define an open sided channel between the skirt (58), sidewall (52) and downwardly inclined upper wall (56) of the recess (50).

Abstract: The present invention relates to a water craft (10) having two spaced hulls (18, 20) and a tunnel (22) defined therebetween. The water craft (10) is provided with a hydrofoil section (38) extending between the hulls (18, 20) and across the tunnel (22). The tunnel facing side of each hull (18, 20) is provided with a recess (50) which extends from a position rearward of the bow (24) of the water craft (10) to the stern (26) of the water craft (10). Each recess (50) includes a side wall (52) which extends upwardly from the keel line of each hull (18, 20) and an upper wall (56) which is inclined downwardly in the direction of the stern (26). Each recess (50) is further provided at a rearward portion thereof with a skirt (58) positioned inboard of the side wall (52) so as to define an open sided channel between the skirt (58), sidewall (52) and downwardly inclined upper wall (56) of the recess (50).