I started my second career with 2d flotila so I can use type VII boat. On my second patrol, on my way home SO reported a sound contatc bearing 270 deg. It was a stormy night and I was east of scapa flo. I chased the ship, ahead flank and finally got a long range visual report from WO. A tanker. I wanted to intercept the ship so I sailed ahead (ahead flank) to intercept it about 10 km away. I waited for the tanker, but it never arrived. I lost contact and the map showed a sunk ship in green, I guess the ship had been capsized.
Later that night, still on the same patrol and same weather condition I chased and waited to intercept another ship, a small merchant. This ship also didn't arrive. Again, the map showed a sunk ship in green. I guess the storm capsized the ship.
