Non-planing boat hull

Abstract

A non-planing boat hull includes a forward portion having a bow with the width tapering from a beam toward the bow and an aft portion having a stern with the aft portion having a width tapering smaller from the beam toward the stern. A keel is provided and disposed along the hull centerline for stability with the keel having a back supporting a propeller shaft and a forward height tapering smaller toward the bow. Fore topsides are provided and extend from the beam to the bow and include an arcuate convex transition to the hull forward portion. Aft topsides extend from the beam to the stern and include an arcuate concave transition to the hull aft portion with the aft topside further forming approximately a 90° angle with a transom and joining the hull aft portion with a convex surface near the waterline of the hull. The fore and aft portions form teardrop shaped waterline and displacement of volumes for the hull.

1 . A non-planing boat hull comprising: 
 a forward portion having a bow, said forward portion having a width tapering smaller from a beam toward said bow;    an aft portion having a stern, said aft portion having a width tapering smaller from the beam toward said stern;    a keel disposed along a hull centerline, said keel having a back supporting a propeller shaft and a forward height tapering smaller toward said bow;    fore topsides extending from said beam to said bow and including an arcuate convex transition to the hull forward portion;    aft topsides extending from said beam to said stern and including an arcuate concave transition to the hull aft portion, said aft topside forming approximately a 90° angle with a transom, said aft topsides joining with the hull aft portion with a convex surface near a waterline of said hull.    
   
   
       2 . The hull according to  claim 1  wherein the hull forward and aft position from a teardrop shaped waterline.  
   
   
       3 . The hull according to  claim 2  wherein the hull forward and aft portion form a relatively flat bottom.  
   
   
       4 . The hull according to  claim 2  wherein the waterline is unchanged at hull speed up to about 6 knots.  
   
   
       5 . The hull according to  claim 1  wherein the hull forward and aft portion from a teardrop shaped displacement volume.  
   
   
       6 . The hull according to  claim 5  wherein the hull forward and aft portion form a relatively flat bottom.  
   
   
       7 . The hull according to  claim 6  wherein the displacement volume is unchanged at hull speeds up to about 6 knots.  
   
   
       8 . A non-planing boat hull comprised: 
 a forward chineless and strakeless portion having a bow, said forward portion having a width tapering smaller from a beam toward said bow;    an aft chineless and strakeless portion having a stern, said aft portion having a width tapers smaller from the beam toward the stern;    a keel disposed along a hull centerline, said keel having a back supporting a propeller shaft and a forward height tapering smaller toward said bow;    fore topsides extending from said beam to said bow and including an arcuate convex transition to the hull forward portion;    aft topsides extending from said beam to said stern and including an arcuate concave transition to the hull aft portion, said aft topside forming approximately a 90° angle with a transom, said aft topsides joining with said aft portion with a convex surface near a waterline of said hull.    
   
   
       9 . The hull according to  claim 8  wherein the hull forward and aft position from a teardrop shaped waterline.  
   
   
       10 . The hull according to  claim 9  wherein the hull forward and aft portion form a relatively flat bottom.  
   
   
       11 . The hull according to  claim 9  wherein the waterline is unchanged at hull speed up to about 6 knots.  
   
   
       12 . The hull according to  claim 8  wherein the hull forward and aft portion from a teardrop shaped displacement volume.  
   
   
       13 . The hull according to  claim 12  wherein the hull forward and aft portion form a relatively flat bottom.  
   
   
       14 . The hull according to  claim 12  wherein the displacement volume is unchanged at hull speeds up to about 6 knots.