The I-400-class submarines of the Japanese Navy were the largest submarines in the world during the WW2-era, and remain so until 1965. They were designed specifically to serve as submarine carriers with the capacity to carry up to three aircraft while still maintaining the typical submarine func... C. Peter Chen from ww2db.com
Submarine I-400 was the namesake craft of her class of underwater aircraft carriers, capable of carrying up to three M6A Seiran seaplanes. Built at Kure, Japan, she (later joined by her sister submarines) became the largest submarine in the world, and would remain so until 1965. On 15 De... C. Peter Chen from ww2db.com
