longitude in degrees and minutes, with options for degrees,
minutes and second, degrees only, or one of several grid
formats.
Map datum is a math model which depicts a part of the surface
of the earth. Latitude and longitude lines on a paper map are
referenced to a specific map datum.
1
Find out which map datum and position format was used
when the original waypoint was created.
If the original waypoint was taken from a map, there should
be a legend on the map that lists the map datum and position
format used to create that map. Most often this is found near
the map key.
2
On the chartplotter, select
Settings
>
Units
.
3
Select the correct map datum and position format settings.
4
Create the waypoint again.
NMEA 0183 Information
Type
Sentence
Description
Transmit
GPAPB
APB: Heading or track controller
(autopilot) sentence "B"
GPBOD
BOD: Bearing (origin to
destination)
GPBWC
BWC: Bearing and distance to
waypoint
GPGGA
GGA: Global positioning system
fix data
GPGLL
GLL: Geographic position
(latitude and longitude)
GPGSA
GSA: GNSS DOP and active
satellites
GPGSV
GSV: GNSS satellites in view
GPRMB
RMB: Recommended minimum
navigation information
GPRMC
RMC: Recommended minimum
specific GNSS data
GPRTE
RTE: Routes
GPVTG
VTG: Course over ground and
ground speed
GPWPL
WPL: Waypoint location
GPXTE
XTE: Cross track error
PGRME
E: Estimated error
PGRMM
M: Map datum
PGRMZ
Z: Altitude
SDDBT
DBT: Depth below transducer
SDDPT
DPT: Depth
SDMTW
MTW: Water temperature
SDVHW
VHW: Water speed and heading
Receive
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
Type
Sentence
Description
VDM
AIS VHF data-link message
You can purchase complete information about National Marine
Electronics Association (NMEA) format and sentences from: NMEA,
Seven Riggs Avenue, Severna Park, MD 21146 USA (
Software License Agreement
BY USING THE DEVICE, YOU AGREE TO BE BOUND BY THE
TERMS AND CONDITIONS OF THE FOLLOWING SOFTWARE
LICENSE AGREEMENT. PLEASE READ THIS AGREEMENT
CAREFULLY.
Garmin Ltd. and its subsidiaries (“Garmin”) grant you a limited
license to use the software embedded in this device (the
“Software”) in binary executable form in the normal operation of
the product. Title, ownership rights, and intellectual property
rights in and to the Software remain in Garmin and/or its third-
party providers.
You acknowledge that the Software is the property of Garmin
and/or its third-party providers and is protected under the United
States of America copyright laws and international copyright
treaties. You further acknowledge that the structure,
organization, and code of the Software, for which source code is
not provided, are valuable trade secrets of Garmin and/or its
third-party providers and that the Software in source code form
remains a valuable trade secret of Garmin and/or its third-party
providers. You agree not to decompile, disassemble, modify,
reverse assemble, reverse engineer, or reduce to human
readable form the Software or any part thereof or create any
derivative works based on the Software. You agree not to export
or re-export the Software to any country in violation of the export
control laws of the United States of America or the export control
laws of any other applicable country.
22
Appendix
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