The problem I find with map contacts update is, certainly, that you get a lot of precise info about the escorts chasing you. Up to 1943, I find relatively easy to evade from escorts after a convoy attack; my experience tells that if you dive at one or two knots after attacking a convoy in silent running, you'll be depth charged for an hour more or less, and that some of the depth charges will fall quite near of you, but with ahead flank speed and some maneuver in the precise moment youīll be at surface, normally, in an hour more or less and almost intact, if not intact at all. The black lines (it doesnīt matter if GWX doesnīt difference between red and black lines) coming near give you a quite precise idea of when to evade at flank speed (I donīt mention the propellers noise because itīs obvious that if you hear propellers al high speed above you someone is about to depth charge you!).
In any case, I survived also to depth charges not using map contact updates keeping the golden rules: silent running and ahead flank when you hear propellers coming at high speed.
For me, map contacts updates
are neccesary by the only reason that the TDC is not a good tool to get target speed. With a little practice, anyone can get a more or less precise AOB or even distance in rough seas, but speed is the Achilles' heel of your calculations. TDC normally gives you tremendous and obvious errors, so finally I decided to update map contacts to have a chance of getting more or less precise calculations about target speed (Iīm a complete failure in mathematics).
If one of these days someone designs a manual targeting system for mathematics anaphabets like me
with a reasonable percentage of error, that day Iīll switch off the "map contacts update".
