Page:Popular Science Monthly Volume 91.djvu/658

 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

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