The Pacific War Online Encyclopedia
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History and Heritage Command #NH 91334
||17.7" by 18'5"
45cm by 5.6m
|Range||6000 yards 5500 m) at 45 knots
|Warhead||772 lbs (350 kg) Type 97 explosive
|Propulsion||Kerosene-oxygen two-cylinder double acting wet heater
||About 100 from 1939
The Type 97 was a smaller version of the Long Lance for use in midget submarines. The photograph above shows the installation on Type A midget submarines, which had doorless tubes with the torpedo noses just protruding. Problems with the leaky first air bottles caused the Type 97 to be withdrawn from service immediately following the Pearl Harbor attack, to be replaced by the Type 98, which used oxygen-enriched air in place of pure oxygen and required no first air bottle.
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