English is not my mother language either but i try my best

and so do you !

I think in real life i would prefer such smaller vessels.
Short patrols lead to longer visits in the bar for drinks!

Of course very vurneable but so were the u boats.
I think the psychological effect was much bigger in a uboat then on a schnell boot

But i know what you are saying. More torpedoes is more fun and stuff like that and u can go a little more further which gives better chances in finding a convoy.
I tried to attack a convoy at night with my schnellboot once and it was a terrible experience