The Sen Toku-class I-401 was once the largest submarine in the world. It was commanded by Lieutenant Commander Nobukiyo Nambu of the Imperial Japanese Navy during World War II. Capable of carrying three two-seat Aichi M6A1 "Seiran" (Mountain Haze) float torpedo bombers, the Sen Tokus were built to launch a surprise air strike against the Panama Canal. Naval History, Military History, Imperial Japanese Navy, Flying Boat, Panama Canal, Army & Navy, Navy Ships, Submarines, Hale Navy
r/submarines - A P-4 submarine was captured by South Korean forces in 1998 after it became entangled in fishing nets. The crew committed suicide and scuttled the boat but it was raised and put into limited service by the South Korean Navy. It is now retired and displayed at the Submarine Base at …