Cross Track Error (XTE)
Cross Track Error (XTE) occurs when your vessel
is steered or drifts off its original course (track). The distance
between your original course and your current position is the cross
track error (XTE).
Cross track errorXTEThe XTE is relative to the track and not the vessel heading. therefor XTE values are specified in terms of distance to the left or right of the track.
When an XTE exists you can steer your vessel back on to its original track, or you can restart the XTE value and use your current position as the starting point for a new track.