Hi Paul, I think you could be right, those Ruski POW's must have been tinkering with the trim tanks, I expect a dead cat in there or something
. Anyway, it gave me another thing to think about while being DC'ed. Enjoyed it, funnily enough, timing between blowing ballast when trying to run at silent speed, then going flank speed to rise again and deploying decoys.
(PS: noticed you are a Sheffield chap, i'm from Huddersfield myself!)