Si.o-nalino- for Help with Flashlig'ht Buoys 



AIR-HOLES 



DISTRESS SIGNALS 



BUOY 



AIR-HOLES 



FLEXIBLE 

 HOSE 



CABLE- 

 ROPE 



g^TORAGE 



The crew get into the compartments and release the buoys. Until their distress signals are 

 answered, they receive a supply of fresh air through the hose attached to the buoys. On the arrival 

 of a salvaging ship, the submarine is hauled up by means of the cables and the men are freed 



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