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NAUTICAL CHART ABBREVIATIONS

The full list is in Admiralty Publication NP 5011 - Nautical Chart Symbols     Also see   Glossary

AIS               Automatic identification System
ATON          Aid to Navigation
B                  Black
Bn                 Beacon
Bu                 Blue
c                    Coarse
C                    Compass
ca                   Cable (one tenth of a nautical mile)
Cb                 Cobbles
CD                 Chart Datum
COG             Course Over Ground
Cy                 Clay
Dir                 Directional
E                     East
ECM               East Cardinal Mark
ED                 European Datum
EPIRB            Emergency Position Indicating Radio Beacon
ETA                Estimated Time of Arrival
f                     Fine
F                     Fixed
Fl                     Flashing
G                     Gravel
G                     Green
GPS                 Global Positioning System
IALA                 International Association Of Lighthouse Authorities
                        (IALA A = Europe, Asia.     IALA B = Americas)
Iso                    Isophase
IPTS                International Port Traffic Signals
IRPCS              International Regulations for Preventing Collisions at Sea
Kn                     Knot
Lat                     Latitude
LAT                    Lowest Astronomical Tide
Ldg                    Leading
Long                 Longitude
M                     Magnetic
m                     metre
M                     Mud
M                     Nautical Mile (1 minute of latitude)
MHWN             Mean High Water Neaps
MHWS             Mean High Water Springs
MLWN             Mean Low Water Neaps
MLWS             Mean Low Water Springs
Mo                     Morse
N                     North
NCM                 North Cardinal Mark
Oc                     Occulting
ODAS               Oceanographic Data Acquisition System
OSGB               Ordnance Survey of Great Britain
PA                     Position Approximate
Pb                     Pebble
PHM                 Port Hand Mark
Q                        Quick
R                        Red
Racon                 Radar Beacon
s                         Second
S                         South, Sand
SART                 Search and Rescue Radar Transponder
Sh                       Shell
SHM                   Starboard Hand Mark
SW                     South West
SOG                    Speed Over Ground
T                         True
TTG                     Time To Go
UT                        Universal Time
UTC                     Universal Time Coordinated  ( = GMT )
VMG                    Velocity Made Good
VQ                        Very Quick
W                         White, West
WGS                    World Geodetic System
Wk                        Wreck
Y                            Yellow

Posted 14th August 2011