Some forward Diving Planes would serve better than one-man subs.

Also, it's make it look cooler AND be more authentic,too.  Hard to beat authentic, AND cool. LOL  If you're re-doing, how about one of the Navy's low-noise screws instead of the old-school propeller?  Or even a SEA engine variant?

I cannot save the world. Only my little piece of it. If we all act together, we can save the world.--Nelson Mandela
An  inconsistent hobgoblin is the fool of little minds
Taking "Just do it" to a whole new level!