Raymarine products and product documents commonly employ abbreviations and acronyms. The following list has been assembled to provide definitions for any such abbreviations and acronyms which may not have been previously defined within Raymarine product documents:
AIS: Automatic Identifications System. AIS receiver or AIS transceiver required.
App.: Apparent
Avg.: Average
AWA: Apparent Wind Angle. Wind sensing instrument required.
AWS: Apparent Wind Speed. Wind sensing instrument required.
BOTW: To Be Supplied Later (TBSL)
BTW: Bearing to Waypoint. GPS position FIX required. Data item is populated after navigation to a waypoint / cursor position has been commmanded.
CH: Close Hauled
CMG: Course Made Good. GPS position FIX required.
COG: Course Over Ground. Produced by GPS sensor (may be internal to the product). Requires that the GPS source have acquired a GPS position FIX and that the vessel be underway and making way.
CTS: Course To Steer: GPS position FIX required. Data item is populated after navigation to a waypoint / cursor position has been commmanded.
DMG: Distance Made Good. GPS position FIX required.
DTW: Distance To Waypoint. GPS position FIX required. Data item is populated after navigation to a waypoint / cursor position has been commmanded.
Err.: Error
Est.: Estimated.
ETA: Estimated Time of Arrival. Estimated time of arrival at waypoint / cursor position or route's last waypoint. GPS position FIX required. Data item is populated after navigation to a waypoint / cursor position has been commmanded.
HDG: Heading. Heading sensing device (ex. autopilot, instrument compass, GPS compass) required. Data item is commonly confused with COG.
HDOP: Horizontal Dilution Of Precision. Produced by GPS sensor (may be internal to the product). Requires that the GPS source have acquired a GPS position FIX. When normally receiving a high quality Satellite Differential FIX, this value will less than or equal to 1.0 (lower is better).
GWD: Ground Wind Direction. Wind sensing instrument and GPS sensor required. GPS position FIX required.
GWS: Ground Wind Speed. Wind sensing instrument and GPS sensor required. GPS position FIX required.
Lat: Latitude. Produced by GPS sensor (may be internal to the product). Requires that the GPS source have acquired a GPS position FIX
Lon: Longitude. Produced by GPS sensor (may be internal to the product). Requires that the GPS source have acquired a GPS position FIX
Max.: Maximum
Min.: Minimum
Pos.: Position
Pres.: Pressure
RADAR: RAdio Direction And Ranging: Radar transducer required.
Rot.: Rotation. Mast Rotation Sensing instrument required.
ROT: Rate Of Turn. Most common source is EV-1 CCU
RPM: Revolutions Per Minute. Data item produced by engine system, typically via a NMEA 2000 engine gateway.
SOG: Speed Over Ground. Produced by GPS sensor (may be internal to the product). Requires that the GPS source have acquired a GPS position FIX.
SONAR: SOund Navigation And Ranging: Compatible Fishfinder depth transducer or depth instrument required.
STW: Speed Through Water; Speed through water sensing transducer required. Data item, also referred to as "Speed" within some Raymarine products, is commonly confused with SOG.
Temp.: Temperature
Trans.: Transmission (engine)
TTE: Time To Empty. Time remaining until fuel tank has been emptied
DTE: Distance To Empty. Distance (range) remaining until fuel tank has been emptied
TTG: Time To Go. Time remaining until arrival at waypoint or route's last waypoint. GPS position FIX required. Data item is populated after navigation to a waypoint / cursor position has been commanded.
TWA: True Wind Angle. Angle of the boat to the wind. Wind sensing instrument, heading sensor, and STW sensor required
TWD: True Wind Direction. Wind sensing instrument, heading sensor, and STW sensor required.
TWS: True Wind Speed. Wind sensing instrument, heading sensor, and STW sensor required.
UTC: Coordinated Universal Time (commonly referred to as GMT). Produced by GPS sensor (may be internal to the product). GPS position FIX required.
VMG: Velocity Made Good to wind or to waypoint. In the case of the latter GPX fix required. Data item is populated after navigation to a waypoint / cursor position has been commanded.
WPT: Waypoint
XTE: Cross Track Error; Linear deviation perpendicular to the left or to the right side of the course line. Data item is populated when navigation to a waypoint / cursor position has been commanded.
RAYFAQ#
AIS: Automatic Identifications System. AIS receiver or AIS transceiver required.
App.: Apparent
Avg.: Average
AWA: Apparent Wind Angle. Wind sensing instrument required.
AWS: Apparent Wind Speed. Wind sensing instrument required.
BOTW: To Be Supplied Later (TBSL)
BTW: Bearing to Waypoint. GPS position FIX required. Data item is populated after navigation to a waypoint / cursor position has been commmanded.
CH: Close Hauled
CMG: Course Made Good. GPS position FIX required.
COG: Course Over Ground. Produced by GPS sensor (may be internal to the product). Requires that the GPS source have acquired a GPS position FIX and that the vessel be underway and making way.
CTS: Course To Steer: GPS position FIX required. Data item is populated after navigation to a waypoint / cursor position has been commmanded.
DMG: Distance Made Good. GPS position FIX required.
DTW: Distance To Waypoint. GPS position FIX required. Data item is populated after navigation to a waypoint / cursor position has been commmanded.
Err.: Error
Est.: Estimated.
ETA: Estimated Time of Arrival. Estimated time of arrival at waypoint / cursor position or route's last waypoint. GPS position FIX required. Data item is populated after navigation to a waypoint / cursor position has been commmanded.
HDG: Heading. Heading sensing device (ex. autopilot, instrument compass, GPS compass) required. Data item is commonly confused with COG.
HDOP: Horizontal Dilution Of Precision. Produced by GPS sensor (may be internal to the product). Requires that the GPS source have acquired a GPS position FIX. When normally receiving a high quality Satellite Differential FIX, this value will less than or equal to 1.0 (lower is better).
GWD: Ground Wind Direction. Wind sensing instrument and GPS sensor required. GPS position FIX required.
GWS: Ground Wind Speed. Wind sensing instrument and GPS sensor required. GPS position FIX required.
Lat: Latitude. Produced by GPS sensor (may be internal to the product). Requires that the GPS source have acquired a GPS position FIX
Lon: Longitude. Produced by GPS sensor (may be internal to the product). Requires that the GPS source have acquired a GPS position FIX
Max.: Maximum
Min.: Minimum
Pos.: Position
Pres.: Pressure
RADAR: RAdio Direction And Ranging: Radar transducer required.
Rot.: Rotation. Mast Rotation Sensing instrument required.
ROT: Rate Of Turn. Most common source is EV-1 CCU
RPM: Revolutions Per Minute. Data item produced by engine system, typically via a NMEA 2000 engine gateway.
SOG: Speed Over Ground. Produced by GPS sensor (may be internal to the product). Requires that the GPS source have acquired a GPS position FIX.
SONAR: SOund Navigation And Ranging: Compatible Fishfinder depth transducer or depth instrument required.
STW: Speed Through Water; Speed through water sensing transducer required. Data item, also referred to as "Speed" within some Raymarine products, is commonly confused with SOG.
Temp.: Temperature
Trans.: Transmission (engine)
TTE: Time To Empty. Time remaining until fuel tank has been emptied
DTE: Distance To Empty. Distance (range) remaining until fuel tank has been emptied
TTG: Time To Go. Time remaining until arrival at waypoint or route's last waypoint. GPS position FIX required. Data item is populated after navigation to a waypoint / cursor position has been commanded.
TWA: True Wind Angle. Angle of the boat to the wind. Wind sensing instrument, heading sensor, and STW sensor required
TWD: True Wind Direction. Wind sensing instrument, heading sensor, and STW sensor required.
TWS: True Wind Speed. Wind sensing instrument, heading sensor, and STW sensor required.
UTC: Coordinated Universal Time (commonly referred to as GMT). Produced by GPS sensor (may be internal to the product). GPS position FIX required.
VMG: Velocity Made Good to wind or to waypoint. In the case of the latter GPX fix required. Data item is populated after navigation to a waypoint / cursor position has been commanded.
WPT: Waypoint
XTE: Cross Track Error; Linear deviation perpendicular to the left or to the right side of the course line. Data item is populated when navigation to a waypoint / cursor position has been commanded.
RAYFAQ#