Take control of a uboat U-48 and patrol the North Atlantic. Hunt Allied convoys and avoid escort groups. Return to Kiel bunkier to load torpedoes and upgrade your uboat.
1203 Grid 42 Reached patrol area
2230 Grid 42 Ship spotted, bearing 080
2238 Grid 42 Visual contact, medium cargo ship
2243 Grid 42 3 bow torpedoes fired
2244 Grid 42 First explosion
2245 Grid 42 Second explosion, ship sunk
Rules on http://invertbit.blogspot.com/