Human-Powered Watercraft

Abstract

A human-powered watercraft, such as a surfboard, paddleboard, body board, or standup paddleboard, incorporates a central section that is narrower than the bow and stern sections.

I claim: 
     
         1 . An elongate, buoyant, human-powered watercraft having a bow (nose) section, a middle section, and a stern (tail) section wherein the middle section width is less than the bow and stern section widths. 
     
     
         2 . The human-powered watercraft of  claim 1  constructed as a surfboard, paddleboard, or standup paddleboard. 
     
     
         3 . The human-powered watercraft of  claim 2  wherein the bow and stern sections are of equal width. 
     
     
         4 . The human-powered watercraft of  claim 2  wherein the bow section is wider than the stern section. 
     
     
         5 . The human-powered watercraft of  claim 2  wherein the stern section is wider than the bow section. 
     
     
         6 . The human-powered watercraft of  claim 2  wherein one or more fins are used under the stern section. 
     
     
         7 . The human-powered watercraft of  claim 3  wherein one or more fins are used under the stern section. 
     
     
         8 . The human-powered watercraft of  claim 4  wherein one or more fins are used under the stern section. 
     
     
         9 . The human-powered watercraft of  claim 5  wherein one or more fins are used under the stern section. 
     
     
         10 . The human-powered watercraft of  claim 2  wherein one or more longitudinal reinforcement members are incorporated. 
     
     
         11 . The human-powered watercraft of  claim 7  wherein one or more longitudinal reinforcement members are incorporated. 
     
     
         12 . The human-powered watercraft of  claim 8  wherein one or more longitudinal reinforcement members are incorporated. 
     
     
         13 . The human-powered watercraft of  claim 9  wherein one or more longitudinal reinforcement members are incorporated. 
     
     
         14 . The human-powered watercraft of  claim 2  wherein the plan-view is not symmetrical about the long axis. 
     
     
         15 . The human-powered watercraft of  claim 2  wherein nose and tail rocker, and one or more fins under the stern section, are incorporated. 
     
     
         16 . The human-powered watercraft of  claim 1  which is constructed as a standup paddleboard without nose or tail rocker. 
     
     
         17 . The human-powered watercraft of  claim 1  which is constructed as a standup paddleboard without tail rocker. 
     
     
         18 . A body board having a narrower central section and wider fore and aft sections. 
     
     
         19 . A surfboard having a bow (nose) section, a middle section, and a stern (tail) section wherein the middle section width is less than the bow and stern section widths.