Wiping out a convoy is an unusual achievement under all circumstances. Congratulations, Kaleun.
On my former life with a different computer, I was able to "escort" a large convoy from Freetown and whittle it away. The grand finale came on a calm day when I ran out of deck gun ammo and watched 4 small freighters limp north.
The track of that luckless convoy is recorded on the Spinnenetz chart.
We had a jolly good time at the Lorient officers club.
This time, the drinks are on you.
