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Originally Posted by nirwana
Playing GWX and NYGM on a day by day base i noticed that in GWX somehow the escorts seems to pick up the noise of my diesel engines easier in comparable situations. Still be able to stay undetected at 12kts in NYGM escorts in GWX start heading into my direction if i run faster then 7knts. 
:hmm: Sometimes i get the impression that escorts in GWX investigate any non-warship sigs which are moving faster then the average speed of the convoy. |
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Originally Posted by nirwana
I 've heared from someone (I guess a expert) that diesel engine sound in surface is not easy being heared by other surface ship hydrophone. For the wave disturb the sound transfer. But I still don't know the diesel engine sound of u-boat can be heared by a watcher or not in 1km distance.
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Enemy hydrophones cannot detect you when you're surfaced in GWX.
Nor can the enemy watch crew's "hear" you.
However more speed does make you more visible to enemy visual sensors when you're on the surface. This is because more speed means more bow spray and more wake, and the spray can be spotted by the watch crews, and the wake can be spotted by aircraft.