Thx for the detailed update! This is taking shape very nicely
Your last point baffles me a little:
"Mission Ends If Discovered: The mission ends if any U-boat is discovered".
Why so?
A discovered U-boat is not necessarily a dead U-boat. Having failed to approach a convoy undetected is a fairly common scenario and dodging the destroyers attacks should be part of the "alternative" mission, ie. survive and escape to fight another day. Nope?
Did you mean "Mission failed" , instead of "Mission ended" ?
Cheers,
Lost