1. Hull 



2. Fuel oil storage 



3. Mast 



4. Snorkel induction 



5. Snorkel exhaust 



6. Navigational lights 



7. Whip antenna 



8. Power module 



9. Hawsehole 



Figure A-1 1. Cutaway of surface power plant hull. 



The power plant is a turbocharged diesel generator. The unit is 

 self-contained, with necessary engine accessories and protective devices. A 

 shell-and-tube-type heat exchanger is provided for the diesel engine, with 

 seawater in the tubes and freshwater in the shell. The freshwater system 

 cools the engine. Engine intake air is taken from the engine room at 

 ambient conditions. An additional 3,000-cfm fan is provided to ventilate 

 the engine room. An exhaust muffler is provided between the engine and 

 a plenum leading to the exhaust stack. Batteries are used for starting the 

 engine. 



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