Talk:Winter 2015 Event/@comment-24849169-20150127004341/@comment-24332640-20150128055513

"I never understood why they were not classified as I-go submarines, they displaced more than 1,000 tons on the surface, but whatever, they fit."

Well, so did the Kaichuus. Actually Ro-500's displacement is *really* close to a K6 or K7.

Japan built big subs. Even little ol' I-168 (small for a Japanese I-type) was almost 1,800 tons at the surface.