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Why cargo submarines always fail

Cargo submarines have been proposed and used in limited wartime roles, from German blockade-running concepts to WWII resupply missions and specialized U-boat tankers. Postwar proposals ranged from ...
During World War II, Japan developed one of the most ambitious naval weapons of the conflict—the I-400 Sen-Toku class submarine carriers. These massive submarines, the largest of WW II, were designed ...
SEOUL, South Korea (AP) — North Korea on Saturday fired what appeared to be submarine-launched ballistic missile off its eastern coast, the U.S. and South Korea said, in the latest test that’s part of ...