there is actually no way to know where stop the stadimeter to have good result.
I made some experiences : Paused the game and picked up with the ruler the distance beetween me and my target (for example: 1050 meters).
Then I set stadimeter to find 1050 m and look at the ennemy ship to find a point of retrait... But there is no rule.
It depend of the ship: for Petrolier, valid point would be near the middle of the funnel, for Bulk Carrier it seems to be the top of funnel and other differents means for warships...
Ships heights looks rights in the file of the game, so what is the matter?...