Indeed Knotical
Im manually calculating the steps that the TDC makes in about 1 second after input,
I miss the AOB, I only took my own angle to the boat.
yesterday I tried it at 8000m and scored a beam shot with one shot after exact the seconds I calculated (without a red line on the chrono)

. Although the limitations of the ruler makes it quite annoying. Is there a possibilty to mod the ruler into greater detail? (+ I cannot let the sonar guy track the ship I want to track,It is always the nearest target : can this be modded? Or is there a way to track the ship that is not the nearest target with the hydrophone that is locked in the periscope/UZO, I do not know how to do it)
@stratege : I always do a 'open tube' command