Whoohoo! I got it right?? Thanks pbfoot!
Canada didn't operate subs huh? I didn't know that, thanks again!
Glad you've got most stuff Insillin. Please post your essay on here after it's marked won't you?
The later U-Boots had schnorkels and excellent Hydrodynamics, very ahead of their time. I will do some more research possibly, you've re-sparked my interest.
BTW, my favourite Sub is the Soviet Typhoon (surprise, surprise
).