well i wanted to know how far out i could hear a sound contact.
alot of times i hear screw sounds, then ask the sonar man to listen and he says no sound contact. i can get a turncount at 34km, and he doesnt hear a thing.
i used the sh3 editor to find out by measuring off distance for a t-3 tanker with the measuring tool from the center of the u-boat. i started at 17 km, heard it, so then moved the t-3 out to 25km, heard it again as the mission started so i kept moving it out until i couldnt hear it as the mission started. that turned out to be 34km.
i made this mission to go along the the other mission for the sound trainer, the objective would be to calculate range by the amplitude of the screws in the hydrophones. the captain in the sound trainor would be updated to range of the t-3 by radio messages, so that he could with practice be able to estimate range to target just by how loud the screws are.
the mission also shows you how to build a sonar overlay on the map, 10 concentric circles of 3.4km apart . this visually lets you see your listening range , and also for sound plotting. the mission starts out with the t-3 at 34.96km from the u-boat, you begin to hear it 3 minutes after the mission starts. at that moment , when the t-3 enters your listening range, you know the t-3 is 34km from you. the t-3 has a turncount, you take one and now you know what speed its making. now its easy to plot on the sonar overlay its progression to you.
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