Receive
Sentence
Description
DPT
Depth
DBT
Depth below transducer
MTW
Water temperature
VHW
Water speed and heading
WPL
Waypoint location
DSC
Digital selective calling information
DSE
Expanded digital selective calling
HDG
Heading, deviation, and variation
HDM
Heading, magnetic
MWD
Wind direction and speed
MDA
Meteorological composite
MWV
Wind speed and angle
VDM
AIS VHF data-link message
You can purchase complete information about National Marine Electronics Association (NMEA) format and
sentences from
Appendix
121