100108 nmea 0183 sentences not recommended for new designs, ,
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NMEA 0183 Sentences Not Recommended for New Designs
Approved by the NMEA 0183 Standard Committee
as of
October 1, 2008
APA - Autopilot Sentence "A"
Commonly used by autopilots this sentence contains navigation receiver warning flag status, cross-track-error, waypoint
arrival status and initial bearing from origin waypoint to the destination waypoint for the active navigation leg of the
journey.
Use of
$--APB
with additional data fields of heading-to-steer and bearing from present position to destination is
recommended.
$--APA,A,A,x.x,a,N,A,A,x.x,M,c--c*hh<CR><LF>
Destination waypoint ID
Bearing origin to destination, Mag.
Status: perpendicular passed at waypoint
Status: arrival circle entered
XTE units, nautical miles
Direction to steer, L/R
Magnitude of XTE (cross-track-error)
Data status: Loran-C Cycle Lock warning flag
Data Status: "OR" of Loran-C Blink and SNR warning flags
BER - Bearing & Distance to Waypoint, Dead Reckoning, Rhumb Line
BPI - Bearing & Distance to Point of Interest
Time (UTC) and distance & bearing to, and location of, a specified waypoint from present position:
BER: Calculated along the rhumb line from a dead reckoned present position. The use of
$--BEC
using great circle calculations is recommended.
BPI: Calculated along a great circle path from a measured present position. Redundant with
BWC, the use of
$--BWC
is recommended.
Waypoint ID
Distance, nautical miles
Bearing, degrees Magnetic
$--BER,hhmmss.ss,llll.ll,a,yyyyy.yy,a,x.x,T,x.x,M,x.x,N,c--c<CR><LF>
$--BPI,hhmmss.ss,llll.ll,a,yyyyy.yy,a,x.x,T,x.x,M,x.x,N,c--c<CR><LF>
Bearing, degrees T
Waypoint longitude, E/W
Waypoint latitude, N/S
UTC of observation
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Page 1
NMEA 0183 Sentences Not Recommended for New Designs
Approved by the NMEA 0183 Standard Committee
as of
October 1, 2008
DBK - Depth Below Keel
DBS - Depth Below Surface
Water depth referenced to the vessel's keel (DBK) or to the water surface (DBS).
The use of
$--DPT
is recommended in place of either of these.
$--DBK,x.x,f,x.x,M,x.x,F*hh<CR><LF>
$--DBS,x.x,f,x.x,M,x.x,F*hh<CR><LF>
Water depth, Fathoms
Water depth, Meters
Water depth, feet
DCN – DECCA position
Status and lines-of-position for a specified DECCA chain.
$ -- DCN,xx,cc,x.x,A,cc,x.x,A,cc,x.x,A,A,A,A,x.x,N,x*hh<CR><LF>
Fix data basis
1
Position uncertainty, n. miles
Purple-line navigation use
A = Valid V = Data not valid
Green-line navigation use
A = Valid V = Data not valid
Red-line navigation use
A = Valid V = Data not valid
Purple
Green
Status: Red-master line, A = Valid V = Data not valid
Red line of position (LOP)
Red zone identifier, number-letter
DECCA chain identifier
Notes
Fix data basis:
1 = Normal pattern
2 = Lane identification pattern
3 = Lane identification transmissions
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NMEA 0183 Sentences Not Recommended for New Designs
Approved by the NMEA 0183 Standard Committee
as of
October 1, 2008
DRU - Dual Doppler Auxiliary Data
Depth, turn rate and % RPM in support of Doppler velocity systems.
The use of
$--DPT
is recommended for depth data,
$--RPM
for shaft rotation and
$--ROT
for rate of turn.
$--DRU,x.x,A,x.x,A,x.x*hh<CR><LF>
Propeller shaft rotation, % of maximum, "-" = astern
Status: Rate of turn
Rate of turn, degrees per minute, "-" = port
Status: Depth
Depth, meters
GDa - Dead Reckoning Positions
GLa - Loran-C Positions
GOa - OMEGA Positions
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Page 3
NMEA 0183 Sentences Not Recommended for New Designs
Approved by the NMEA 0183 Standard Committee
as of
October 1, 2008
GXa - TRANSIT Positions
Location and time at waypoint "c--c":
$--aF: predicted or estimated time
$--aaP: present position and time
$--aaA: past position and time
The use of waypoint location
$--WPL
(for past positions) or
$--GLL
(for present position) followed by time tag
$--ZDA
is recommended for reporting past or present waypoint times;
$--WPL
followed by
$--ZTG
is recommended for
estimated time.
Dead reckoned positions:
$--GDF,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c--c*hh<CR><LF>
$--GDP,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c--c*hh<CR><LF>
$--GDA,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c--c*hh<CR><LF>
Loran-C determined positions:
$--GLF,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c--c*hh<CR><LF>
$--GLP,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c--c*hh<CR><LF>
$--GLA,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c--c*hh<CR><LF>
Omega determined positions:
$--GOF,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c--c*hh<CR><LF>
$--GOP,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c--c*hh<CR><LF>
$--GOA,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c--c*hh<CR><LF>
Waypoint ID
Longitude - E/W
Latitude - N/S
UTC of position fix
TRANSIT determined positions:
$--GXF,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c--c,x*hh<CR><LF>
$--GXP,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c--c,x*hh<CR><LF>
Satellite number
Waypoint ID
Longitude - E/W
Latitude - N/S
UTC of position fix
Property of NMEA. Do not redistribute without permission from NMEA.
Page 4
NMEA 0183 Sentences Not Recommended for New Designs
Approved by the NMEA 0183 Standard Committee
as of
October 1, 2008
GTD - Geographical Position, Loran-C TDs
Loran-C Time Difference (TD) lines of position for present vessel position.
The use of
$--GLC
is recommended.
$--GTD,x.x,x.x,x.x,x.x,x.x*hh<CR><LF>
TD 5, micro-seconds
TD 4, micro-seconds
TD 3, micro-seconds
TD 2, micro-seconds
TD 1, micro-seconds
GXA - TRANSIT Position
Location and time of TRANSIT fix at waypoint "c--c".
TRANSIT system is not operational, no recommended replacement.
$--GXA,hhmmss.ss,llll.ll,a,yyyyy.yy,a,c--c,x*hh<CR><LF>
Satellite number
Waypoint ID
Longitude - E/W
Latitude - N/S
UTC of position fix
HCC - Compass Heading
Vessel compass heading, which differs from magnetic heading by the amount of uncorrected magnetic deviation.
The use of
$--HDG
is recommended.
$--HCC,x.x*hh<CR><LF>
Compass heading, degrees
HCD - Heading and Deviation
Actual vessel magnetic heading, indicated compass heading and the difference (deviation) between them.
The use of
$--HDG
is recommended.
$--HCD,x.x,M,x.x,H,x.x,a*hh<CR><LF>
Magnetic deviation, degrees E/W
1
Compass heading, degrees
Magnetic heading, degrees
Notes:
1) Easterly deviation (E) subtracts from Compass Heading
Westerly deviation (W) adds to Compass Heading
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Page 5
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