Fast fire boat

Abstract

A ship hull for a fire boat capable of speeds up over 18 knots and up to 22 knots formed from high tensile strength steel by a method comprising: (a) longitudinally framing said hull by forming a frame having more longitudinal members than transverse members, and wherein said longitudinal members are spaced to carry more and absorb more of the weight and stress than the transverse members, and wherein said longitudinal members are in a spaced parallel relations of between 12 and 24 inches apart, and said transverse members are in a spaced parallel relation of between 48 and 96 inches apart, and (b) plate and shape weight minimization modeling consisting of using rule based parametric equations to size plates and shapes which are based on industrial classification society standards.

What is claimed is:  
     
         1 . A ship hull for a fire boat capable of speeds up over 18 knots and up to 22 knots formed from high tensile strength steel by a method comprising: 
 (a) longitudinally framing said hull by forming a frame having more longitudinal members than transverse members, and wherein said longitudinal members are spaced to carry more and absorb more of the weight and stress than the transverse members, and wherein said longitudinal members are in a spaced parallel relations of between 12 and 24 inches apart, and said transverse members are in a spaced parallel relation of between 48 and 96 inches apart,    (b) plate and shape weight minimization modeling consisting of using rule based parametric equations to size plates and shapes which are based on industrial classification society standards.    
     
     
         2 . A vessel with the hull according to  claim 1 , comprising an engine room with machinery positioned in the aft portion of the hull.  
     
     
         3 . A vessel with the hull according to  claim 2 , wherein the hull comprises a superstructure which is positioned forward of the engine room.  
     
     
         4 . A vessel with the hull according to  claim 1 , wherein the machinery in the engine room comprises at least one drive motor and a generator driven by this motor coupled to a propeller shaft.  
     
     
         5 . A vessel with the hull according to  claim 1 , wherein the machinery in the engine room comprises at least one jet drive motor and a generator driven by this motor.  
     
     
         6 . A vessel with the hull according to  claim 4 , wherein said motor is a diesel motor.  
     
     
         7 . A vessel with the hull according to  claim 6 , further comprising at least one fire pump disposed on the deck of said vessel.  
     
     
         8 . A vessel with the hull according to  claim 4 , wherein said engine room comprises at least two diesel engines as drive motors and at least two diesel fire pump engines.  
     
     
         9 . A vessel with the hull according to  claim 8 , further comprising at least one bow thruster.  
     
     
         10 . A vessel with the hull according to  claim 8 , wherein said vessel has a main deck and superstructure, a plurality of fire pumps disposed on the main deck of said vessel and at least one fire pump is disposed on the superstructure of said vessel.  
     
     
         11 . A vessel with the hull according to  claim 10 , further comprising at least 3 fuel tanks and at least 3 fire pumps, wherein a first and second fuel tank are located side by side at the midships of said fire boat for fueling the motors of a first and second fire pumps, and a third fuel tank is located aft of said first and second fuel tanks for fueling the motor of a third fire pump and said plurality of diesel motors.  
     
     
         12 . A vessel with the hull of  claim 1 , wherein the tensile strength of the steel is greater than the tensile strength for conventional steel.  
     
     
         13 . A vessel with the hull of  claim 12 , which is 85 feet long.