sonar overlay

[greyrider]

i hope this picture can be seen , i think you will be very interested in what it shows. this is a picture of the sonar overlay i made that can be build on the map. i tried it out for the first time a few days ago, and it works just great. not only does it work ,but it produced an additional tool used to calulate AOB and target course.

the hydrophones picked up screw sounds at bearing 310, range 34km, turncount 43 rpm, (mark 1).
at that great distance i had to wait quite awhile, as large bearing changes take some time to develope.

by the third mark , the targets course, angle on bow, and speed was known to the u-boat, over 17 km away.

i took a fourth bearing, and then a fifth, range 10.2 km. extended the targets course line with the protractor tool, then with the protractor tool drew my CPA to the targets course and headed off to intercept it, about 7.2 clicks from the u-boats position at the center of the sonar overlay.

this is the mission i created for phase III of the sound trainer.