I finally installed RealNav this weekend. I was at the end of a patrol on the Spanish coast in March, 1940, and decided to dock at the ship named Bessel for resupply. I installed the files for RealNav, the camera.dat file, and the mod that removes the tails of radio contacts.
I have to say that this is very interesting using the sextant on Polaris and interpolating the SR/SS times. I noticed it was very accurate at the beginning when I was leaving Spain. However, I started to get errors of around 60nm while heading toward 15 degrees West. I have found that Polaris is about one degree below what it should be on my screen (1280/1024). But I believe what is getting me bad results on the longitude readings is that the sun is coming up and going down too soon for the area I'm in. I parked the sub right on the 15 degree line (using CTRL-click) and I still was getting a difference of about 51 minutes between my sun set and the GMT sun set reported on Van's almanac (instead of the expected 60 minutes).
I need to play around with it some more to see if I can find any consistency with the times so that I know if I should add a couple of degrees here and there to match the game map.
Thanks,
Ron
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