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Glossary
AIS : Automatic Identification System.
AIO : Admiralty Information Overlay published by United Kingdom
Hydrographic Office (UKHO)
AtoN : Aids to Navigation
Base CD : Chart CD containing complete chart data
BFT : Beaufort scale of wind force
BRG : Bearing
Capt’s DOSCA : Communication system between ship and shore provided by
Weathernews Inc. aimed at safety, economy and environmental
operation (Captain’s Dynamic Operation System for Counter planning
and Analysis).
Cell Permit : A file containing an encryption key for S-63 chart. This file is supplied by
UKHO, PRIMAR STAVANGER, and Hydrographic and Oceanographic
Department of Japan Coast Guard.
ENC Decoder : Software used to manage charts. This software imports/updates charts.
COG : Course Over the Ground
CTW : Course Through Water. The direction of the ship's movement through
the water.
Data Server : S-63 chart supply source
DNV GL : Det Norske Veritas - Germanischer Lloyd
ECDIS : Electronic Chart Display and Information System
ENC : Electronic Navigational Chart S-57/S-63
ETA : Estimated Time of Arrival
ETD : Estimated Time of Departure
GC : Great Circle
GPS : Global Positioning System
HDG : Heading. Ship’s heading
HSC : High Speed Craft. Vessels conforming to the definition of High Speed
Craft in SOLAS
H UP : Head up. In H UP mode, own ship’s heading line is always pointed to the
top center of the radar display.
IHO : International Hydrographic Organization
IMO : International Maritime Organization
J-Marine Box App : JRC app to collect data in ship
LMT : Local Mean Time
MFD : Multi-Function Display. Each navigation support function such as
RADAR, ECDIS, Conning, or AMS can be executed by switching.
MMSI : Maritime Mobile Service Identity
NAVTEX : Navigational Telex
NeCST : Navigational electronic Conning Station Table
NeCST Manager : Land side equipment for sharing information with NeCST
NM : Nautical Mile 1 nm = 1852 m
NMEA : Protocol used for communication of navigation equipment
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