BOAT HULL DESIGN 



2-61 



The number and arrangement of stiffeners used aft of Station 7 results in a very thin 

 laminate. A better balanced laminate- stiff ener combination could be achieved by dropping 

 one stiffener and respacing the others, using a Type A laminate with 3 plies of woven roving 

 as the basic laminate. 



Framing: All stiffeners are hat type. 



Longitudinal No. 1 



Longitudinal No. 2 



Longitudinal No. 3 



Longitudinal No. 4 

 Longitudinal No. 5 

 Longitudinal No. 6 



* Carried up transom to deck. 



Decks: Sandwich construction - 2 plies cloth on top face, 1 ply 1-1/2 ounce mat, non- 

 structural core - variable thickness, 1 ply 1-1/2 ounce mat, 1 ply woven roving. 



Location 



Main Deck 



Cabin Top - Lower Level 



Cabin Top - Upper Level 



Cockpit 



Interior Decks 



Core Thickness 



1/2 in. 

 1-1/4 in. 

 1-1/4 in. 



5/8 in. 



1/4 in. 



Built-in Bunks and Lockers Forward: 4 plies woven roving. 



Bulkheads: 3/4 in. core with 1 ply cloth and 1 ply 1-1/2 ounce of mat on each face. 



Design 



Shell Laminate: The laminate chosen is that referred to as Type A in this manual and 

 consists of: 1 ply cloth on the outboard face, 1 ply mat and a varying number of plies of 

 woven roving. 



The laminate selection is based on the excellent impact resistance of this type of laminate. 



The design head of water is taken to 24 in. above the deck edge forward of Station 7; and 

 to 6 in. above deck edge aft of Station 7, Table 2-2. 



