Oh it's also not very funny if you're in a VIIb, believe me, I was in that area a few days ago and it's very nerve-wracking....
But don't let that grinning devil BBW discourage you with his defeatist comments
a careful Kaleun can still operate successfully in that area, even in 1941, as long as he doesn't crashdive or submerge at all unless it's absolutley essential for survival...
also, require your entire crew to carry rabbit's feet, lucky coins, four-leaf clovers, and be sure to consult at least a few astrologers before leaving port...
Oh, and keep the liferaft inflated at all times and your tauchretter close to hand