Report:
As I understand it now map centered in coordinates, the latter which gave the navigator after the start of the game or the latest calculations of the position. Now it is impossible to guess the real position of the boat

. That's good

. Hints positions in the message box no longer appear. The mod works well.

It now remains to check the sextant. Sun table - just what need.

@Vanilla
Excellent comments on navigation. I, too little competence in matters of navigation. Thank you for your help.