I was sailing in IXB during rain & fog on way to raid Southend again while running TC 256, can't see anything beyond 700m in AN79 on May 23rd 1940. The game got laggy, so to be safe, I went under. My sonar man picked up 6 warships NW, another 6 warships NE, and another 6 warships east of me, plus 2 warships SE (assuming ASW trawler & Elco boat) around 6000-10000m surrounding me. Before I surfaced and planned on to flank SW away from them, I didn't check the weather, sudden my WO spotted warships as I went wtf and saw sky clearing up and sunny. I hurry went back under silent running SW, and only see all of them were destroyers, no capital ships. Lucky none of them saw me due to high waves. At least I got to sink two large troop ships again.
Now I am heading to Dover again to sink another two large troop ships, plus a floating dock and Southampton cruiser. I never seen a mine around those docks. Only time I got stuck by a mine and caused serious damages near Firth of Forth, so I never bother to go there again.