AIS:Automatic Identification
AMVER:Automatic Mutual-assistance Vessel Rescue System
DNID:Data Reporting & Polling closed Network ID (SSAS)
DSC:Digital Selective Calling
EGC:Enhanced Group Calling
EPIRB:Emergency Position-Indicating Radio Beacon
GMDSS:Global Maritime Distress and Safety System
HSD:High Speed Data
IMO:International Maritime Organization
IMSO:International Mobile Setellite Organization
I-4:4th generation Satellite of Inmarsat
LES:Land Earth Station
LRIT:Long-Range Identification and Tracking-of Ships
MES:Mobile Earth Station
MMSI:Maritime Mobile Service Identity code
MPDS:Mobile Packet Data Service
NCS:Network Coordination Station
NBDP:Narrow-Band Direct-Printing
NAVTEX:Navigation Telex
RCC:Rescue Coordination Center
SAS:Satellite Access Station (I-4)
SES:Ship Earth Station
SSAS:Ship Security Alert System
