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-   -   GW Mod question - U-Boat-Physics? (https://www.subsim.com/radioroom/showthread.php?t=99700)

AS 10-20-06 08:02 AM

Personally, I donīt mind whether my stopped U-Boat goes up or down as this depended on the trimming anyway (eating and digesting was enough to alter a boats buoncy), for me itīs important that my U-Boat DOES MOVE either up or down when stopped. Everything else can be considered a cheat, because in real life...

- it was NOT possible to find an ideal position (e.g. ahead of the convoy) and wait at periscope death and zero knots forever (except with the periscope up, at VERY calm sea and Bernard not using the toilet to let go some extra weight...)

- battery capacity was a much more relevant factor than it is in SH3. Without energy, the sub could not hover and would eventually break the surface or sink down to the bottom (if there was any...)

- And why the hell am I explaining all this anyway? You already know all that, I guess. :oops:

Cheers, AS

Kpt. Lehmann 10-20-06 08:26 AM

There is far more to the GWX version than simply positive bouyancy...

Real Life U-boat Behavior Mod- by Kpt. Lehmann based on information provided by Cdre Gibs

Generally speaking this mod causes your uboat to react more accurately to its environment and reflects the fragile nature of "trim" in comparison to hydrodynamics.

This mod also implements and represents surface wave action/friction much more realistically than has been presented elsewhere before. Heavy seas impede forward motion and cost fuel. Watch your knot meter for proof... you can see it change slightly as waves crash against your bow.

Much greater pitch and roll on the surface.

Also present is a (limited) positive bouancy manageable at 2 knots forward speed.

A better feeling of mass is now present... Accelleration takes time. In higher speed ranges coming up to top speed takes even longer.

Directional changes cost speed (as usual... but a little more so now)

Fragility of trim- (See all statements on positive bouancy) DC's upset the boat more... takes more time to recover control/trim of boat after close detonations... I was BLASTED TO THE SURFACE (as I have read in real life accounts over and over) more than once. DC's detonating above you may force you down a bit.

Periscope depth is a little more more tricky now.
At shallow depths speed below 2 knots increases the risk of breaching the surface... at which point the LRG mod may come into play.

Flooding adds mass to your U-boat fast and must be reacted to with all possible haste! Remember your trim is fragile? I'm sure you can guess what happens when your boat is taking on water.

All stop will bring the Uboat up a few meters to a point of NEUTRAL bouyancy... not necessarily to the surface.

As you travel and set your depth... the boat will generally settle at one meter less than you set... (If you are travelling at 1.5-2 knots.)

caspofungin 10-20-06 01:15 PM

does the acceleration effect also apply to escorts and merchant ships? i'm tired of seeing a cruiser put the pedal to the metal -- 9-30+ knots in 10 seconds, just in time to watch my spread of torps pass well astern.

also, the dd's and de's turn radius us way too sharp at present -- will that be changed too?


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