Talk:List of battleships by upgraded maximum stats/@comment-195.184.83.35-20140828190801/@comment-68.99.222.45-20150127084752

^These are submarines we're talking about though, and subs are hella slow despite their weight. The fastest subs can just barely reach 20kn, and you can't catch (and then set up a torpedo for) something moving as fast as you. They're not designed for chasing down high speed task forces. They're only opportunity is when they're already positioned ahead of an incoming fleet. The rest comes down to planning. Once they're behind a ship moving that fast it's gone.

Unless you just think 18kn is slow, which no, by ww2 naval standards that's actually very fast. Faster than you can run.