Sailor Steve is right, it's the same problem they had back then, so just embrace the suck and get on with sinking ships.
One little hint, though:
On the surface, if you have a rough idea where the target might be, you can lock on to them. When you do that, you can ask the Watch Officer for range and bearing to the closest target. I tend to do that in the dark and/or bad weather.
__________________
The U-Boat Commander of Love
|