Traveling to my patrol area in the Caribbean, the watch spotted a single ship. It was a Medium cargo, sailing NE at 8kt. It was almost midnight, rough sea, and I was in ideal position to attack. I stayed on surface, launched two eels and moved away from the ship.
As soon as the first torpedo hit, they turned on the search lights and pointed them right into us. Before they sank, they had time to fire a few shots, and they were dead accurate, like it was a cruiser.
Here's the result:
I'm gonna need to repaint the boat.