yeah both your replies helped a lot. still, it bugs me a little.
its not the fact that i lose the lock but the fact, no matter how well i use the stadimeter i cant get no readout because the notepad loses the shiptype when the lock breaks.
and in this particular case i really dont want to run surfaced, as im in the street of dover atm, and theres a lot of stuff going on i dont want to get involved with

pausing or holding down l is an option, but it seems like a bandaid solution.
you know, im just curious, why the game makes me lose the lock. i want to plot an interception course with map updates disabled, have my contact about 8km out or so (id estimate), its big enough so i can use the stadimeter precisely, but the lock keeps breaking after 10secs or so. and i didnt encounter that in the vanilla version of the game. which i played only for 2 days or so.
i think basically i want to know, why it does that and how i can stop it.