For the first 9-10 patrols of this career (while in my Type VIIB), I was sinking mostly singles, and found very few convoys to attack for some reason. Then I got my Type IXB in January 1941, and for the 2-3 patrols since then I have been getting most of my kills in convoys which I have been finding mostly off the north-west coast of Africa.
I can generally sink 5-6 ships from the same convoy in 2 or 3 attack runs spread over a couple of days, and then usually stumble onto a loner or two on the way to or from my patrol zone and home. The weather has been too rough much of the time on the last 2-3 patrols for me to use my deck gun or get all of my externals loaded into my boat, so I've wound up having to head home with ammo left on each trip so far. Still, they've been very successful patrols and I finally vaulted over Kretschmer into first place on the Aces list after my most recent patrol
