BOAT HULL DESIGN 



2-39 



TABLE 2-3. BOTTOM SHELL 



Location 



Fwd of 

 Station 5 



At 

 Station 7 



At 

 Station 8 



At 

 Station 9 



Max. Clear 

 Dist. Betvv. 

 Long'ls. L 

 (In.) 



5.3 



(psi) 



25. 3 



15. 3 



10. 3 



5. 3 



Bending Moment 



M - PD X L2 



(2. 21) 



(In. -Lb. ) 



59.4 



45. 9 



42. 1 



28. 3 



Section Modulus 

 „ _ FSxM _ 1.5M 



■ bu 



F bu * 



(In. 3) (2.22) 



Z =0. 0038 

 wr 



Z cl = 0. 0029 



Z m = 0. 0043 



Z cl = 0. 0022 

 Z m = 0. 0034 



'wr 



'cl 



0. 0027 

 0. 0021 

 0. 0032 



Z OT = 0.0018 

 Z cl = 0. 0014 



Z m = 0. 0021 



Laminate 

 (Figs. 6-31 

 and 6-32) 



Type A - 3 plies 

 of woven roving or 

 Type B - 4 ounces 

 of mat - use 3 

 plies of 1-1/2 

 ounce mat 



Type A - 2 plies 

 of woven roving or 

 Type B - 3 ounces 

 of mat - 2 plies of 

 1-1/2 ounce mat 



Type A - Same as 



above or 



Type B - Same as 



above 



* Type A - 2 plies 

 of woven roving or 



* Type B - 2 ounces 

 of mat - 1 ply 2 

 ounce mat 



For practical reasons, carry the laminate required at 

 Station 7 all the way aft to the transom. 



'k„ = 23, 700 psi for woven roving 

 = 31, 100 psi for cloth 

 = 20, 500 psi for mat 



Table 5-9 



Side Shell Laminate: Table 2-4. The side shell laminate is determined on the basis of 

 the bottom laminate thickness, except in the area forward of Station 4-1/2. Forward of this 

 point the chine disappears, the laminate is in an area of high impact and the bottom laminate 

 is carried to the deck edge. 



