humming bird
 

so when i read iron coffins, i remember in a few instances herbert werner mentioning that under long dc attacks, the boat would slowly sink until they had to blow a little compressed air out and rise them up a little again. in nygm the boat sinks at 0 knots, is there anyway to modify the file nygm changes so that it will sink slowly at say, maybe 2 knots? does it have to do with the weight of the boat?

thanks in advance

Yes, I believe it can be modded that way, but I dont know how.

There were recorded cases of a depth-charge going of right above the boat forcing it down 50-100 feet, and at least one case of a depth-charge right under the boat forcing it to the surface. None of this is modelled in the game, of course.

A boat being forced down or up a little should happen all the time, and at any speed. Of course when moving it's easier to use the planes to adjust the depth. While it's extremely difficult to keep the boat in trim when not moving, at 2 knots it should be controllable, so you shouldn't automatically sink at that speed.