Commandant (G-TTM) U.S. Coast Guard Updated: 17 October 1994 Washington DC 20593 ACRONYMS AC&I Acquisition, Construction & Improvement ADS Automatic Dependent Surveillance AMVER Automated Mutual-assistance Vessel Rescue system AOR Atlantic Ocean Region ARQ Acknowledge Request (SITOR handshaking mode) ASP Acquisition & Support Plan CAMSLANT Communications Area Master Station Atlantic CAMSPAC Communications Area Master Station Pacific CC Command Center (same as Operations Center) CCIR International Radio Consultative Committee (Standards Committee of the ITU, renamed ITU Sector for Radiocommunications - ITU-R) CFR Code of Federal Regulations 33 CFR USCG navigation regulations 47 CFR FCC regulations 46 CFR USCG vessel regulations CGDN Coast Guard Data Net CMC COMSAT Mobile Corporation, a subsidiary of COMSAT COMMSTAs Coast Guard Communication Stations COMSAT Communications Satellite Corporation (U.S. Signatory to the INMARSAT Convention) COSPAS Space System for Search of Distress Vessels (a Russian acronym) CW Continuous Wave (i.e. Morse Code) DSC Digital Selective Calling DMA Defense Mapping Agency DMAHTC Defense Mapping Agency Hydrographic Topographic Center DT Coast Guard District T Staff (see T) EECEN Coast Guard Electronics Engineering Center, Wildwood NJ EGC Enhanced Group Call (see SafetyNET) EPIRB Emergency Position Indicating Radiobeacon FCC Federal Communications Commission FCMP Fleet Composite Broadcast (Honolulu) FEC Forward Error Correcting (SITOR broadcast mode) FOB FCC Field Operations Bureau F/V Fishing Vessel GDOC Geographical Display Operations Computer GCMP Guam Composite Broadcast (no longer in operation) GMDSS Global Maritime Distress & Safety System HF High Frequency (3-30 MHz) HYDROLANT U.S. broadcasts of Atlantic and Mediterranean Ocean navigational warnings HYDROPAC U.S. broadcasts of Pacific and Indian Ocean navigational warnings IHO International Hydrographic Organization IMO International Maritime Organization (a U.N. Organization) INMARSAT International Maritime Satellite Organization INMARSAT-A Inmarsat mobile voice/data satellite terminal INMARSAT-B Inmarsat mobile voice/data satellite terminal, replaces Inmarsat-A INMARSAT-C Inmarsat mobile data-only satellite terminal, also used to receive SafetyNET broadcasts INMARSAT-E Inmarsat EPIRB INMARSAT-M Inmarsat mobile voice satellite terminal (not GMDSS-compliant) IOR Indian Ocean Region ITU International Telecommunications Union (a U.N. Organization) ITU-R International Telecommunications Union Sector for Radiocommunications (old CCIR) ITU-T International Telecommunications Union Sector for Telecommunications (old CCITT) JOTS Joint Operability Targeting System LANTAREA Coast Guard Atlantic Area, New York NY LCMP Atlantic Composite Broadcast MAYDAY Distress signal MEDICAL Medical Transports, when preceded by urgency signal. Pronounced MAY-DEE-CAL. MEDICO Emergency Medical Communications MET Meteorological METAREA Meteorological Area (Defined by WMO) (same as NAVAREA) MID Maritime Identification Digits (3 digit country identifier preceding an MMSI) MF Medium Frequency (0.3-3 MHz) MMSI Maritime Mobile Service Identity (9-digit DSC identity) MLB Motor Lifeboat MLC Coast Guard Maintenance and Logistic Command MSI Maritime Safety Information M/V Motor Vessel NAVAREA Navigational Area (defined by IMO & IHO) NAVCEN Coast Guard Navigation Center, Alexandria VA NAVTEX Navigational Text (broadcast on 518 kHz) NBDP Narrow band direct printing (ITU name for SITOR) NMA COMMSTA Miami call sign (now keyed from CAMSLANT) NMC CAMSPAC Point Reyes call sign NMEA National Marine Electronics Association NMF COMMSTA Boston call sign NMG COMMSTA New Orleans call sign NMN CAMSLANT Portsmouth call sign NMO COMMSTA Honolulu call sign NOAA National Oceanic and Atmospheric Administration (under Dept of Commerce) NOI Notice of Inquiry NOJ COMMSTA Kodiak call sign NPRM Notice of Proposed Rulemaking NRV COMMSTA Guam call sign (now keyed from CAMSPAC) NTM Notice to Mariners NWS National Weather Service (under NOAA) NVIC Navigation and Vessel Inspection Circular OBS Meteorological observation reports OE Operating Expense OSC Coast Guard Operations Systems Center, Martinsburg WV OPCEN, OPC Coast Guard Operations Center (same as Command Center) PACAREA Coast Guard Pacific Area, Alameda CA PAN PAN Urgency signal PIW Persons In the Water POB Persons Onboard POR Pacific Ocean Region RATT, RTT Radioteletype RCC Rescue Coordination Center (same as OPCEN) RCP Resource Change Proposal RR ITU Radio Regulations RT Radiotelephone RTCM Radio Technical Commission for Maritime Services (a non-profit organization) SafetyNET Considered a name, not an acronym (INMARSAT's enhanced group calling system for maritime safety broadcasts) SAR Search & Rescue SARNET NOAA SARSAT Network SARSAT Search & Rescue Satellite-Aided Tracking SCN Ship Coordination Net (Coast Guard HF Radiotelephone distress and safety system) SECURITE Safety signal (pronounced SECURITAY) SELCAL Selective Call (sequential single frequency code) SILENCE MAYDAY Imposed silence on distress channel (pronounced 'SEELONCE MAYDAY') SITOR Simplex teletype over radio (also radiotelex or NBDP) SOLAS Safety of Life at Sea Convention (treaty) SSB Single Sideband T or G-T Coast Guard Office of Command, Control and Communications, Washington DC TISCOM Coast Guard Telecommunication and Information Systems Command, Alexandria VA USC United States Code (statute) UNCLAS Unclassified UTB Utility Boat UTC Coordinated Universal Time VESREPS Commercial fishing vessel reports VHF Very High Frequency (30-300 MHz) WAGB Icebreaker WHEC High Endurance Cutter WMEC Medium Endurance Cutter WPB Patrol Boat WLB Bouy Tender navigational warnings IHO International Hydr