Submarines of the Imperial Japanese Navy
The submarines ("I-52"-class) were submarines of the Imperial Japanese Navy, designed and built by Mitsubishi Corporation, between 1943 and 1944, as cargo carriers. They were quite long and carried a crew of up to 94 officers and enlisted. They also had a long cruising range at a speed of .
Japanese submarine I-124
The submarine was the fourth Japanese submarine lost in action in World War II. It has been surrounded in controversy since it was lost. In World War II there were claims that two submarines had been lost in the attack on Darwin; that its crew remained alive for some time; and that divers heard crew movement inside the hull. Later it was reported by both Japanese and American sources that "the "I 124" with her Division Commander Keiyu Endo, embarked, sank with all those on board in water only forty feet deep. US Navy divers were sent down and entered the submarine, and removed naval code books, a godsend for the Navy codebreakers at Pearl Harbor". However, this was later disproved by historian Dr Tom Lewis, in his book "Sensuikan I-124"; later re-published as "Darwin's Submarine I-124".