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Originally Posted by ichso
I know that the compass gives the correct absolute heading of your sub. But the matter cannot be solved that easily by correcting the course once a day because of the thing that Hadrys said sometimes he got off course by 60° (I assume he meant in far less than a day).
Also if you correct an error of 10° in your course by 10° in the opposite direction you want to travel you produce even more error because the course changes slightly over time and not abrupt all at once. But I don't know how big this error would be in the last case this might be the smallest problem overall.
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It was a f..in storm of the year, I've hit TCx256 and watched how the compass turns on my eyes like in roulette...
Problems produce problems. If we assume a correction once a day that would be: we are +10 so for the next day go -20. But under condition that speed, sea state etc are the same. So the only way to navigate properly in heavy weather is to constantly click the compass. I can see that when allowing up to 3-5° divergence in 128 (256max) and than clicking -3-5° should give a nice accuracy but this is insane when you need to go 5000km even in a straight line!!! Add up to this plane attacks after max 2hrs on the surface (maybe 4 during night above 60°N which isn't that dark...).