Chapter 2-SHIP DESIGN AND CONSTRUCTION 



3.106 



Figure 2-23.— Deck symbols for naval ships. 



SHIPS BUILT BEFORE MARCH 1949 



For ships built prior to March 1949, the first 

 letter of the identifying symbol is A, B, or C, 

 and indicates the section of the ship in which the 

 compartment is located. The A section extends 

 from the bow of the ship aft to the forward bulk- 

 head of the engineering spaces. The B section 

 includes the engineering spaces, while the C 

 section extends from the after bulkhead of the 

 engineering spaces aft to the stern. The divi- 

 sions of the ship are indicated in figure 2-24. 

 The lower half of the diagram shows the num- 

 bering of compartments, beginning at the forward 

 end of each section. The even numbers are on 

 the port side and the odd numbers are on the 

 starboard side. 



After the division letter, the deck designation 

 comes next in the symbol. Main deck compart- 

 ments are indicated by numbers from 101 to 199. 



Second deck compartments run from 201 through 

 299, third deck compartments form a 300 series, 

 etc. A zero preceding the number indicates a 

 location above the main deck. The double bot- 

 toms always form the 900 series on any ship 

 built before March 1949, regardless of the 

 number of decks above. 



The use of the compartments is indicated 

 by the following letters: 



A— Supply and storage 



C— Control 



E— Machinery 



F— Fuel 



L— Living quarters 



M— Ammunition 



T— Trunks and passages 



V-Voids 



W- Water 



C-217-A 



SUPERSTRUCTURE 



STERN 



STARBOARD 



3.107 

 Figure 2-24.— Divisions of a ship built prior to 

 March 1949. 



-Supply compartment 



.Compartment number (starboard 

 side) 



.Second deck 



.After part of ship (C section) 



147.25 

 Figure 2-?5. — Example of compartment symbol 

 on ship built prior to March 1949. 



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