Thanks for the input. Reasons I ask what you guys settle for and how accurate you can get it are a few:
Right now I have no idea really if my estimates are concidered good, poor or average, or stupid poor or stupid good. Say I do 3 readings on a target and get the results 2000m, 2700m, 1300m (close to actual gameplay results in heavy wind conditions). To me this sounds stupid poor but if that's how accurate I can expect it to be in high waves then it would be average and something I would be more willing to accept.
For the 3 bearing method, without hydrophone line overlays on the nav map and the initial contact 20 km away, it's common for me to see the calculated position to be off by more than 700 meters, course off by more than 2 degrees and speed can be wildly off. With the hydrophone lines I can get it down to within 10-20 meters, course within 0.5 degrees and speed within 0.5 kts which to me is stupid good.
Another reason I ask is I am still experimenting with what errors I could introduce by not having the periscope set up correctly when doing the reading, and to find the proper way of using the periscope for more accurate readings.
Yet another reason I ask is, I want to move onto angled shots, that is not 90 degrees shot. For that I need accurate distance for the torpedo turn and gyro setup. Even at close range being off by 300 meters matters a great deal.
So again, at the bottom of it, I want to know what one can expect in terms of accuracy in itself when it cones to range finding specifically.
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