Sonar's weird. You can go to the hydrophone station and ping a bearing, and you get a range. The thing is, if you keep pinging that bearing, the range gets smaller (more accurate?) in smaller and smaller steps, as if it's assymptoting. It's a bit annoying though because you have to ping the hell out of something to get a real range. The other problem is that you get a low-precision bearing reading of the hydrophone. All in all, i've had very little use for sonar. The stadimeter is quicker, and mostly more accurate. Perhaps sonar can help in extreme fog, against targets that aren't listening.
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