Well after the loss of our Warrant officer on shore, we promised to do him proud.
seven ships and 18k tons later, I think we did.
Nothing bigger then a Mid or a
Granville, but the most exciting moment was I was gunning a crippled mid, when suddenly our watch saw a warship (a A&B) as I was near the Bristol channel. sp I put 2nd torpedo in the mid and then went to scope depth, tried to put a spread of three eels on the A&B, but all missed, so I crashed dived and his depth charges where well off. So I slowly surfaced, and and waited till he was turning on his search pattern, and put a torpedo in his gut. 
Also gunned down two trawlers, a bad day for fish and chips in Britain!
When I go out next time it will be December 1940...