Raymarine ST70 Instrument User Reference Handbook page 39

Appendix A Abbreviations
This is a list terms associated with Raymarine products. Please
note that not all terms will be applicable to all products.
Term Description
AWA Apparent Wind Angle
AWS Apparent Wind Speed
Apparent Wind The wind felt on a boat as it moves
True Wind The wind as it would be felt on a boat moving only with the
tide. (i.e. stationary in the water).
Ground Wind The wind as it would be felt on a stationary object. Usually
this is taken to be at rest with respect to the land (i.e a
vessel with zero speed over ground), however some prefer
this to stationary in the water (i.e a vessel with zero speed
through water).
COG Course Over Ground
DSC Digital Selective Calling
DSM Digital Sounder Module
EBL Electronic Bearing Line
Field A piece of information displayed or stored.
GPS Global Positioning System
GWD Ground Wind
HDOP Horizontal Dilution Of Position
LAT Latitude
LON Longitude
MOB Man Overboard
Abbreviations
Term Description
SOG Speed Over Ground
STW Speed Through Water
TWA True Wind Angle
TWS True Wind Speed
VMG Velocity Made Good
XTE Cross Track Error
39