Multi-hull boat

Abstract

A multi-hull boat 50 comprising a pair of side by side hulls 21, and a wingdeck 22 extending between the hulls 21, wherein the hulls 21 include inner topsides 23 which are adapted to inhibit the hulls 21 from pitching.

1 . A multi-hull boat comprising a pair of side by side hulls, and a wingdeck extending between the hulls, wherein the hulls include inner topsides which are adapted to inhibit the hulls from pitching.  
   
   
       2 . The multi-hull boat defined by  claim 1 , wherein the multi-hull boat is a catamaran.  
   
   
       3 . The multi-hull boat defined by  claim 1 , wherein the inner topsides are curved at a location which is adjacent the bows of the hulls.  
   
   
       4 . The multi-hull boat by  claim 1 , wherein each inner topside includes at least one chine, and at least one inclined surface which is inclined towards the other inner topside.  
   
   
       5 . The multi-hull boat defined by  claim 4 , wherein the chines extend partway along the inner topsides.  
   
   
       6 . The multi-hull boat defined by  claim 4 , wherein the chines and the inclined surfaces merge with the bows of the hulls.  
   
   
       7 . The multi-hull boat defined by  claim 4 , wherein the chines curve upwardly at a location which is adjacent the bows of the hulls.  
   
   
       8 . The multi-hull boat defined by  claim 4 , wherein the chines have a maximum width of 5 mm to 500 mm.  
   
   
       9 . The multi-hull boat defined by  claim 4 , wherein the chines have a maximum width of 70 mm to 150 mm.  
   
   
       10 . The multi-hull boat defined by  claim 4 , wherein the inclined surfaces are inclined at an angle of 30° to 60° relative to the vertical.  
   
   
       11 . The multi-hull boat defined by  claim 4 , wherein the inclined surfaces are inclined at an angle of 45° relative to the vertical.  
   
   
       12 . The multi-hull boat defined by  claim 4 , wherein the inclined surfaces have a minimum vertical height of 50 mm to 1000 mm.  
   
   
       13 . The multi-hull boat defined by  claim 4 , wherein the inclined surfaces have a minimum vertical height of 300 m.  
   
   
       14 . The multi-hull boat defined by  claim 1 , wherein an underside of the wingdeck includes at least one protrusion which is adapted to inhibit waves from slamming against the wingdeck.  
   
   
       15 . The multi-hull boat defined by  claim 14 , wherein each of the protrusions is at least generally V-shaped.  
   
   
       16 . The multi-hull boat defined by  claim 15 , wherein each of the protrusions includes a pair of diverging sides, wherein each of the diverging sides includes at least one chine and at least one inclined surface.  
   
   
       17 . The multi-hull boat defined by  claim 16 , wherein the inclined surfaces of the protrusions are inclined at an angle of 30° to 80° relative to the vertical.  
   
   
       18 . The multi-hull boat defined by  claim 17 , wherein the inclined surfaces of the protrusions are inclined at an angle of 60° relative to the vertical.  
   
   
       19 . The multi-hull boat defined by  claim 14 , wherein the protrusions extend only partway along the wingdeck.