The I-200 class were also impressive
Imperial Japanese Navy submarines - Wikipedia, the free encyclopedia
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Imperial Japanese Navy submarines - Wikipedia, the free encyclopedia
The Sentaka Type (I-201 class) submarines were modern design, and known as Sentaka (From Sen, abbreviation of Sensuikan, "Submarine", and Taka, abbreviation of Kōsoku, "High speed"). Three were built, I-201, I-202, and I-203 (I-204 to I-208 were not completed).
They displaced 1070 tonnes, had a test depth of 360 feet, and were armed with four torpedo tubes and 25-mm guns in retractable mounts to maintain streamlining. These submarines were designed for mass production. They were high-performance boats, with streamlined all-welded hulls and a high battery capacity supplying two 2500hp motors, which had nearly double the horsepower of the German-designed MAN diesels. The submerged speed was 19 knots, more than double that achieved by contemporary American designs. They were equipped with a snorkel, allowing for underwater diesel operation while recharging batteries.
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