During WWII the largest submarine was the Japanese I-400 Class
sub. It was 400 feet long, displaced 6,000 tons, carried 3
airplanes, and had a complement of 144 officers and men.
During WWII the largest submarine was the Japanese I-400 Class
sub. It was 400 feet long, displaced 6,000 tons, carried 3
airplanes, and had a complement of 144 officers and men.
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Beluga class submarine was created in 1988.
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Test depth for U.S. boats was between 250' and 400' depending on
the boat class.
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The Kursk was an Oscar II class submarine, of the Russian
Navy.