Fighting Off Submarines with Armed Buoys 



Electric light— *$' 



Wireless and wireless mast- 

 Mast folds down with closing 

 of hatch 



Locker 



3 Rapid-fire gun. 

 Telescoping pen 



Water-tiqhtam 

 munition locker 

 Valve to lei on 

 compressed 

 air in subrnen 

 ing tank 



Valve 

 in let from 

 compressed 

 air tank 



Gasoline engine and air 

 compressor in water-tight 

 compartment 



Wireless and 

 telephone • 



Deck 

 hatch 



oring "^ks^Compress- 

 \j7 ed air 

 engine 



642 



