Ok guys, here is the trick...but beware! There are some side effects...
It's a very simple tweak, provided that you are familiar with Goblin Editor
(if it's not your case, there is a simple guide:
http://www.subsim.com/radioroom/showthread.php?t=165805 ).
Now, open any of the u boats .gr2 file. Let's take the VIIB for example, but it will work on every model, now merge the NSS_Uboat7b.GR2 with the proper NSS_Uboat7b.sim file.
under
"NSS_Uboat7b.sim" open the
"unit_Submarine @ NSS_Uboat7b"
in the new window select the
"unit_submarine", found under the
"Render" tree.
And here we go, now pay attention...
1) find the
*mass* value in unit_Submarine -->unit_Ship-->obj_Hydro, here change the value to
852.8.
2) now go for
"surfaced"-->
"displacement" and set the value to
853,
do he same with
"submerged"-->
"dispalecement" and set to
857.
3) last thing, search for the
"Front_diveplane" and
"Rear_diveplane" under "unit_Ship" and set the
"drag" and
"prop_fact" to
0.1 and
0 respectively for both dive planes.
And it's done. With theese little tweaks my VIIB and VIIC boats work like a dream. They keep depth very very well down to 200 meters. There is still a lite sinking effect, but nothing like the stock game. Now if your boat is at 220m and you keep running at 1knot the boat will not sink anymore. Even if you stop the engines and loose some meters (but it's very slow), as soon as you gain movement the boat will stablize itself at ordered depth.
Additional tweak: I don't know if it has a real impact on the game, but I've boosted the power of the electric motors as well, just to make sure the boat has the necessary horsepower to make it against the water resistance while climbing up when rudders are in rise position..
under
"E_propulsion" set the
"eng_power" value to
1500 (which was the real total power output of the electric motors anyway 750+750). Note that this will not affect the u boat speed while submerged, only the acceleration.
I Think it's everything.
OH NO! I almost forgot the in-famous side effects...
well, nothing serious really.. only diving times are a LOT FASTER.
A possible solution is to adjust the values under the "Ballast" tree, although I have not tested.
P:S Sorry for my poor English, I hope it is clear enough...