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5 Selectable Readouts Used by All Non-Instrument Views; Navigation Mode
Bearing
Bearing is the direction to a destination waypoint measured in degrees from North (i.e. 321°, where 000° is
North, 090° East, 180° is South, 270° is West).
CMG/SMG
Course Made Good/Speed Made Good. Course Made Good is the angle between the starting point on a route and
the current position of the boat. The goal is to have CMG and Track equal to the same number. See the Course
Made Good illustration. Speed Made Good is the distance from the starting waypoint on the route divided by the
time elapsed since starting navigation on the route.
COG
Course Over Ground. Course Over Ground is the current direction the boat is traveling measured in degrees from
North (i.e. 321°, where 000° is North, 090° East, 180° is South, 270° is West). When the Course Over Ground
is equal to Bearing, the boat is said to be "On Course" and will arrive at the destination in the most efficient
manner. See the Glossary for more information.
Off
Suppresses the readout so that no data shows in that position.
Position
Position is the current location (latitude, longitude) determined by GPS.
SOG
Speed Over Ground. Speed Over Ground is the measurement of the boat's progress across a given distance; the
speed measurement provided by GPS; accurate destination times can be derived from this measurement. See the
Glossary for more information.
TRK/CMG
Track/Course Made Good. The Track Line is the desired line of travel between two waypoints, and represents the most
efficient path between the two points because it is a straight line. The TRK is measured in degrees. See above for an
explanation of Course Made Good.
TTG
Time To Go. Time To Go is the estimated time required to reach the destination waypoint. TTG is calculated using
the SOG and DTG.
Temp
The current detected water temperature.
Aux. Temp
The current detected water temperature from an optional-purchase Temperature Probe or Temp/Speed accessory.
Time
The current time.
Time + Date
The current time and date.
Triplog
Displays the triplog, which measures the elapsed time since last reset, the distance traveled since last reset, and
average speed during timed interval.
VMG
Velocity Made Good. Velocity Made Good is the speed of travel relative to the next waypoint on the route. The
goal is for VMG to equal Speed.
Voltage
Power supplied to the control head.
WPTend/ETA/DTG
Waypoint End/Estimated Time of Arrival/Distance to Go. Waypoint End is the last waypoint on the route.
Estimated Time of Arrival is the estimated time of arrival to the last waypoint on the route. Distance To Go is the
distance between the current position of the boat and the last waypoint on the route.
WPTend/TTG/DTG
Waypoint End/Time To Go/Distance to Go. Waypoint End is the last waypoint on the route. Time To Go is the
estimated time required to reach the last waypoint on the route. TTG is calculated using the SOG and DTG. Distance
To Go is the distance between the current position of the boat and the last waypoint on the route.
Water Speed
The current speed of the water as it flows past the boat.
WPTnext/ETA/DTG Waypoint Next/Estimated Time of Arrival/Distance to Go. Waypoint Next is the next waypoint on the route.
Estimated Time of Arrival is the estimated time of arrival to the next waypoint on the route. Distance To Go is the
distance between the current position of the boat and the next waypoint on the route.
WPTnext/TTG/DTG Waypoint Next/Time To Go/Distance to Go. Waypoint Next is the next waypoint on the route. Time To Go is the
estimated time required to reach the next waypoint on the route. TTG is calculated using the SOG and DTG.
Distance To Go is the distance between the current position of the boat and the next waypoint on the route.
Waypoint/TTG
Waypoint/Time To Go. Waypoint/Time To Go for the next waypoint on the route.
XTE
Cross Track Error is the straight-line distance of the boat from the intended Track. XTE measures how far the boat
is off course, and also triggers the Off Course Alarm.
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