Explanation of abbreviations

Acronym	Description
AIS	Automatic Identification System
ECDIS	Electronic Chart Display and Information System
ENC	Electronic Navigational Chart is a database used for the ECDIS.
ENI	The “unique European vessel Identification Number” is an identification number allocated once only to each vessel.
GPS	The “Global Positioning System” is a satellite system enabling you to determine your own position.
MKD	The “Minimum Keyboard and Display” is the standard Inland AIS display and entry device.
MMSI	The “Maritime Mobile Service Identity” is a number assigned by the authorities to a vessel and its Inland AIS device.
IMO	International Maritime Organization
ITU	International Telecommunication Union
WGS84	The “World Geodetic System of 1984” is a geodesic reference system used in particular with GPS.