He is talking about the Type II coastal. 40 meters long, about 134 feet was the shortest one. But still much bigger than the 70 feet he is talking about.
Even the Jap mini-sub at Pearl Harbor was 78 feet.
“Even the Jap mini-sub at Pearl Harbor was 78 feet.”
Wow - I always thought of it as two guys (two small Japs at that!) crammed into a 10-foot long tube. Of course I didn’t think too much on it. Engine, transmission, oxygen, etc. But still never would have figured on 78 feet.