Designed in 1938 it is a Type-A midget submarine 80 feet in length, 6 feet in diameter. The displacement is 46 tons and the hull is made to break down into separate three sections.
The craft is propelled by a 600-horsepower electric motor, driving a pair of contra-rotating propellers. Batteries supply the power but a mother ship is required to recharge.
Range is between 25 to 100 miles based on battery use. The sub carries two torpedoes, each armed with 1000 lbs of explosive.
Ponga Jim Mayo and
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The Ships, Subs,
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