I am afraid I don“t fully understand what you mean with the "SCR file from th HT"...
I would be thankful if you could explain this a bit further because it would make mission beginnings much more interesting when you have to make your way out of a port crowded with other ships...
In fact, I made a stealth mission to Lowestofte recently just to find out that the whole port was empty...

I got like 10 metres from the inner dock...