Here's a nice picture comparing their sizes: https://inteng-storage.s3.amazonaws.com/images/import/2017/04/WW2_submarines_comparison.jpg https://inteng-storage.

Here's a nice picture comparing their sizes: https://inteng-storage.s3.amazonaws.com/images/import/2017/04/WW2_submarines_comparison.jpg https://inteng-storage.s3.amazonaws.com/images/import/2017/0... Source: https://interestingengineering.com/uncovering-i-400-japanese-submarine-aircraft-carriers-ww2 https://interestingengineering.com/uncovering-i-400-japanese...