Modular Boat Hull Molds and Method of Making Boat Hulls Using Same

Abstract

The present invention generally provides mold modules for constructing boat hulls, methods of constructing boat hulls using the mold modules, and hulls constructed using the mold modules. The modules may be adjustable, and may be included in a kit for building the hull of many boats of different dimensions but generally the same shape. Each mold module generally comprises a mold in a shape complementary to that of a portion of a boat hull, and an edge mold to form the edge of the hull part formed by that mold module. A mold module according to the present invention may also comprise one or more mold adjustment areas, and calibrators for selecting the boat hull dimensions. Methods for using the aforementioned mold modules generally comprise steps of molding hull parts, removing them from the mold modules, aligning them and finally attaching them together.

What is claimed is: 
     
         1 . A stabilizer keel having a fore and an aft comprising a hollow portion extending longitudinally therethrough and partially filled with ballast, and a fluid controller for controlling a motion of the ballast in the hollow portion. 
     
     
         2 . The stabilizer keel according to  claim 1  wherein said fluid controller comprises one of a valve, a plurality of baffle bulkheads, a water jet, a pump, and combination thereof. 
     
     
         4 . The stabilizer keel according to  claim 1  wherein said fluid controller comprises a seastate sensor and controls said motion of said ballast autonomously. 
     
     
         5 . The stabilizer keel according to  claim 1  wherein
 said fluid controller controls said motion of said ballast to be directed towards the fore of the stabilizer keel and to have a pre-selected flow rate when the fore of said stabilizer keel is lower than the aft of said stabilizer keel; and 
 said fluid controller controls said motion of said ballast to be directed towards the aft of said stabilizer keel and to have a pre-selected flow rate when the aft of said stabilizer keel is lower than the fore of said stabilizer keel; 
 wherein a pitching motion of said stabilizer keel is damped by said motion of said ballast.