APPENDIX 5 ABBREVIATIONS, UNITS AND SYMBOLS
AP-16
R:
S:
T:
U:
V:
W:
Abbreviation
Meaning
Abbreviation
Meaning
RA
Rain
ROM
Read Only Memory
RAIM
Receiver Autonomous
Integrity Monitoring
ROM(M)
ROM (Monitor Unit)
ROM(T)
ROM (Transponder Unit)
RAIN
Rain
ROT
Rate Of Turn
RAM
Random Access Memory
RSSI
Received Signal Strength
Indication
RAM(M)
RAM (Monitor Unit)
RAM(T)
RAM (Transponder Unit)
RTA
Requested Time of Arrival
RFM
Regional Function Message
RX
Receive
RNG
Range
Abbreviation
Meaning
Abbreviation
Meaning
S
South
SFI
System Function ID
SAR
Search And Rescue
SIM
Simulation
SART
Search And Rescue
Transponder
SN
Snow and Ice
SART ACT.
SART active
SOG
Speed Over the Ground
SE
Southeast
SOLAS
Safety Of Life At Sea
SEP
September
STW
Speed Through the Water
SET
Set (i.e., set and drift, or setting
a value)
SW
Southwest, Switch
SYNC
Synchronization
Abbreviation
Meaning
Abbreviation
Meaning
TCPA
Time to Closest Point of
Approach
TOW
Vessel engaged in towing oper-
ations
TEST
Test
TRANS
Transition
TH
Thunderstorm
TRX
Transceiver
TI
Turn rate Indicator
TX
Transmit
TIME
Time
Abbreviation
Meaning
Abbreviation
Meaning
UN/
LOADED
LOADED or UNLOADED
UTC
Universal Coordinated Time
Abbreviation
Meaning
Abbreviation
Meaning
VHF
Very High Frequency
VSWR
Voltage Standing Wave Ratio
Abbreviation
Meaning
Abbreviation
Meaning
W
West, Wide
WI
Wind
WARNING
Warning
WIG
Wing In Ground