By default, the laylines are calculated integrating the immediate current mesured by the instruments sensors (difference ground/surface).
The do not anticipate the current evolution and integrate the leeway (usually insignifiant in front of the current).
If you have the current atlas, you can force the current atlas calculation (for the laylines) with a continuous calculation regarding the tide and the boat’s position (Standard & Pro Ranges). Refer to settings>general settins>data to be calculated.
It is also possible to force manually the current. Toolbar>forcing data.
