[gap]

Originally Posted by TheDarkWraith

Azimuth: correct
True Azimuth: correct
Ref Azimuth: incorrect. azimuth of the reference point relative to sub's course
Ref Azimuth Diff: correct

Okay. For more cleaness, what about making all the Azimuth values relative to the true North? The only use of sub-course relative azimuth would be if magnetic declination was simulated in game, or if our compass could break apart (thus forcing us to adjust our route or to orient ourselves with the stars), but I don't think this is going to happen anytime soon...

Originally Posted by TheDarkWraith

You are currently getting Ref Altitude Diff. It's the angle val. The angle val (or now Elevation) is the difference between scope horizontal reference mark and sextant (stadimeter) line. That's the best I can do currently.

Okay, I think this is good enough

Originally Posted by TheDarkWraith

There are only 4 button clicks needed to use the Sextant:
1) Click Navigator
2) Click Sextant
3) Click Enable Sextant
4) click Sextant button to start using it (I can't call events thus you have to press the button yourself). Anyways you have to align the vertical reference line with the body you want to measure first so there's no need in even trying to call the event (once you are using Sextant [stadimeter] you are not allowed to move camera left or right)

I see

Originally Posted by TheDarkWraith

Marking lines auto disappear when you click Enable Sextant. When you click Disable Sextant they are re-enabled (and you are booted out of sextant screen)

then what is the use of the "Toggle marking lines visibility" button?