«LOCATION (Long & Lat)
ØAccurate to 6 meters (3m with DGPS)
«SPEED
ØSOG – Speed of boat over ground
•Not same as boat speed thru water (i.e.
log)
•Effected by river current or tide
«TRACK
ØCOG – Course over ground
•Not necessarily same as boat heading
•Effected by wind, river/lake current, or
tide
«BEARING & DISTANCE
ØBRG - To Next Waypoint
«CROSS TRACK ERROR
ØXTE - Distance Off Course