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-180
Japanese submarine "I-180 (originally I-80") was a "Kaidai" type ("KD7" sub-class) cruiser submarine of the Imperial Japanese Navy during World War II. Ordered in 1939 under the 4th Naval Armaments Supplement Programme, she was laid down at the Yokosuka Naval Arsenal on 17 April 1941 as "I-80". Launched on 7 February 1942, she was renumbered "I-180" on 20 May 1942, and completed on 15 January 1943.