I do not have this mod installed so I don't have a reference to the loudness of GW. However, the enignes were actually very quiet inside the sub as well as when surfaced. if the engine room doors were closed, the sound of the engines was barely audible throughout the sub and almost silent on the surface. Especially if the hatch was closed. One would be able to tell what speed the engines were set to by the amount of vibration on the bridge more than the actual sound of the engines. If the engine room doors were open then the sound would of course be louder. There are a few quiet scenes in Das Boot were this is noticeable, the diesel sound is just background noise.
_________________
|