# Commission Implementing Regulation (EU) 2019/838 of 20 February 2019 on technical specifications for vessel tracking and tracing systems and repealing Regulation (EC) No 415/2007, Appendix A: ABBREVIATIONS

Extent: E+W+S+N.I.

AI
Application Identifier
AIS
Automatic Identification System
ADN
European Agreement concerning the International Carriage of Dangerous Goods by Inland Waterways
ASCII
American Standard Code for Information Interchange
ASM
Application Specific Message
AtoN
Aids to Navigation
DAC
Designated Area Code
DGNSS
Differential GNSS
FI
Functional Identifier
GLONASS
(Russian) GLObal NAvigation Satellite System
GNSS
Global Navigation Satellite System
GPS
Global Positioning System
HDG
Heading
IAI
International Application Identifier
ID
Identifier
ITU
International Telecommunication Union
MMSI
Maritime Mobile Service Identifier as referred to in ITU Recommendation ITU-R M585
ROT
Rate Of Turn
Class B SO/CS
Class B mobile stations using either carrier-sense time division multiple access (CSTDMA) technique ('CO'), or Self-organising time division multiple access (SOTDMA) technique ('SO')
SOLAS
Safety Of Life At Sea
SQRT
Square root
UTC
Universal Time Coordinated
VHF
Very High Frequency
VTS
Vessel Traffic Services

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Source: https://www.legislation.gov.uk/eur/2019/838/annex/appendix/A (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-838/annex/appendix-A
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.