The GWX Real-Life U-boat Behavior Mod

Kpt. Lehmann · 09-07-06, 07:05 PM

The GWX Real Life U-boat Behavior Mod- by Kpt. Lehmann modded based on R&D information provided by Cdre Gibs.

This mod causes your U-boat to react more accurately to its environment and reflects the fragile nature of "trim" in comparison to hydrodynamics.

Creating this mod led to a whole series of very cool discoveries and situations in testing.

U-boats were never usually set for neutral buoyancy anyway... Trim was set to be slightly positive. This was generally done with safety in mind.

In GWX the "All stop" command will bring the U-boat up a few meters to a point where NEUTRAL bouyancy is achieved... not necessarily to the surface. This accurately simulates a U-boat's trim for positive bouyancy.

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

Periscope depth is a little more more tricky now.

At shallow depths speed below 2 knots increases the risk of breaching the surface.

Additionally there is now greater pitch and roll on the surface.

This mod also implements and represents wave action/friction much more realistically. Heavy seas impede forward motion and cost fuel. You will be able to watch your knot-meter for proof... you can see it change slightly as waves crash against your bow.
In storms, forward motion will be somewhat impeded... costing you fuel as you attempt to compensate by pushing your diesels harder.

A better feeling of mass is now present... Acceleration takes more time. In the higher speed ranges coming up to desired speed takes a little longer.

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

Fragility of trim- (See all statements on positive bouancy) Being depth charged upset the boat more which the U-boat Captain must actively manage... 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 more than before.

You will need to use an occasional burst of power to control the boat occasionally during close DC attacks. This naturally makes noise and with this one element alone, enemy sensors have become more effective in a passive way. (As previously mentioned... GWX sensors are being overhauled)

Flooding adds mass to your U-boat fast... will affect the trim of the boat and must be reacted to with all possible haste! Remember trim is fragile. I'm sure you can guess what happens when your boat begins taking on water... Again you will have to make noise to stop the flooding... and increase power to maintain depth.

We spent good deal of time testing this aspect of GWX and I believe most users are going to be rather happy with what we've done here.

Sink them all mates!

09-07-06, 07:05 PM	#1
Kpt. Lehmann GWX Project Director Join Date: Jul 2005 Location: The Republic of Texas Posts: 6,994 Downloads: 124 Uploads: 0	The GWX Real-Life U-boat Behavior Mod The GWX Real Life U-boat Behavior Mod- by Kpt. Lehmann modded based on R&D information provided by Cdre Gibs. This mod causes your U-boat to react more accurately to its environment and reflects the fragile nature of "trim" in comparison to hydrodynamics. Creating this mod led to a whole series of very cool discoveries and situations in testing. U-boats were never usually set for neutral buoyancy anyway... Trim was set to be slightly positive. This was generally done with safety in mind. In GWX the "All stop" command will bring the U-boat up a few meters to a point where NEUTRAL bouyancy is achieved... not necessarily to the surface. This accurately simulates a U-boat's trim for positive bouyancy. As you travel and set your depth... the boat will generally settle at roughly one meter less than you set... (If you are travelling at 1.5-2 knots.) Periscope depth is a little more more tricky now. At shallow depths speed below 2 knots increases the risk of breaching the surface. Additionally there is now greater pitch and roll on the surface. This mod also implements and represents wave action/friction much more realistically. Heavy seas impede forward motion and cost fuel. You will be able to watch your knot-meter for proof... you can see it change slightly as waves crash against your bow. In storms, forward motion will be somewhat impeded... costing you fuel as you attempt to compensate by pushing your diesels harder. A better feeling of mass is now present... Acceleration takes more time. In the higher speed ranges coming up to desired speed takes a little longer. Directional changes cost speed (as usual... but a touch more so now) Fragility of trim- (See all statements on positive bouancy) Being depth charged upset the boat more which the U-boat Captain must actively manage... 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 more than before. You will need to use an occasional burst of power to control the boat occasionally during close DC attacks. This naturally makes noise and with this one element alone, enemy sensors have become more effective in a passive way. (As previously mentioned... GWX sensors are being overhauled) Flooding adds mass to your U-boat fast... will affect the trim of the boat and must be reacted to with all possible haste! Remember trim is fragile. I'm sure you can guess what happens when your boat begins taking on water... Again you will have to make noise to stop the flooding... and increase power to maintain depth. We spent good deal of time testing this aspect of GWX and I believe most users are going to be rather happy with what we've done here. Sink them all mates! __________________ www.thegreywolves.com All you need is good men. - Heinrich Lehmann-Willenbrock Last edited by Kpt. Lehmann; 09-07-06 at 08:26 PM.