Inmarsat-C / SafetyNET
Also written: SafetyNET, EGC
The satellite system that carries NAVAREA warnings to ships at sea, and the terminal number rescue centres give for reports.
NAVAREA warnings reach ships beyond radio range by satellite: Inmarsat's SafetyNET service broadcasts them to every ship in the area over the Enhanced Group Call (EGC) system, and Iridium now provides a similar service. Inmarsat-C terminals also send text messages, so a rescue centre's Inmarsat-C number appears next to its telephone and e-mail in contact lines.
When a warning mentions Inmarsat, it is usually giving a contact number or reporting a service disruption.
What the archive shows
9,741 messages in this archive use “Inmarsat-C / SafetyNET”, the earliest issued 1994-03-17 and the latest 2026-09-23. 1 of them is in force in the latest lists we collected. A hazard reported again and again counts once per message.
The largest yearly count is 2017, with 830 messages. Collection is incomplete between 2024-05 and 2026-08-17, so 2024, 2025 and 2026 are not comparable with fully collected years.
Icebergs accounts for 4,535 of 9,741 recorded messages (47%), the largest warning type group in this selection.
Located messages that use it fall in 54 sea areas; the most frequent are Labrador Sea (3,547), Mediterranean Sea - Eastern Basin (1,419) and South Pacific Ocean (1,343).
Its use is spread fairly evenly through the year: the busiest month, October, has 850 messages and the quietest, February, 707.
By warning series: NAVAREA IV 4,653, HYDROPAC 2,559, HYDROLANT 2,489 and NAVAREA XII 35, and 1 more.
Messages using it, by year of issue
By month of issue, all years
Where it appears · 54 sea areas
- Labrador Sea 3,547
- Mediterranean Sea - Eastern Basin 1,419
- South Pacific Ocean 1,343
- North Atlantic Ocean 1,005
- Indian Ocean 231
- Davis Strait 192
- Mozambique Channel 192
- Caribbean Sea 190
- Tasman Sea 190
- Ionian Sea 89
- South Atlantic Ocean 79
- Tyrrhenian Sea 74
In force now · 1
- HYDROPAC 2250/26 · Nav aids · South Pacific Ocean2026-08-06 · in force
…OFF AIR. 2. VALPARAISO PLAYA ANCHA RADIO 33-04.70S 071-36.80W WILL TRANSMIT VIA SAFETYNET AND SAFETYCAST.
Puerto montt radio 41-28.80S 072-57.70W off air →
How it reads in recent messages
- NAVAREA IV 921/26 · Icebergs · Labrador Sea2026-09-22
…NEAREST CANADIAN COAST GUARD MARINE COMMUNICATIONS AND TRAFFIC SERVICE STATION OR USING INMARSAT CODE 42. 7. FOR MORE REPORTING INFORMATION OR TO DOWNLOAD SHAPEFILES AND WEEKLY…
North american ice service (nais) iceberg bulletin 230001Z sep → - NAVAREA IV 896/26 · Icebergs · Labrador Sea2026-09-16
…NEAREST CANADIAN COAST GUARD MARINE COMMUNICATIONS AND TRAFFIC SERVICE STATION OR USING INMARSAT CODE 42. 7. FOR MORE REPORTING INFORMATION OR TO DOWNLOAD SHAPEFILES AND WEEKLY…
North american ice service (nais) iceberg bulletin 170001Z sep → - NAVAREA IV 891/26 · Icebergs · Labrador Sea2026-09-15
…NEAREST CANADIAN COAST GUARD MARINE COMMUNICATIONS AND TRAFFIC SERVICE STATION OR USING INMARSAT CODE 42. 7. FOR MORE REPORTING INFORMATION OR TO DOWNLOAD SHAPEFILES AND WEEKLY…
North american ice service (nais) iceberg bulletin 160001Z sep → - NAVAREA IV 884/26 · Icebergs · Labrador Sea2026-09-13
…NEAREST CANADIAN COAST GUARD MARINE COMMUNICATIONS AND TRAFFIC SERVICE STATION OR USING INMARSAT CODE 42. 7. FOR MORE REPORTING INFORMATION OR TO DOWNLOAD SHAPEFILES AND WEEKLY…
North american ice service (nais) iceberg bulletin 140001Z sep → - NAVAREA IV 873/26 · Icebergs · Labrador Sea2026-09-10
…NEAREST CANADIAN COAST GUARD MARINE COMMUNICATIONS AND TRAFFIC SERVICE STATION OR USING INMARSAT CODE 42. 7. FOR MORE REPORTING INFORMATION OR TO DOWNLOAD SHAPEFILES AND WEEKLY…
North american ice service (nais) iceberg bulletin 110001Z sep → - NAVAREA IV 867/26 · Icebergs · Labrador Sea2026-09-09
…NEAREST CANADIAN COAST GUARD MARINE COMMUNICATIONS AND TRAFFIC SERVICE STATION OR USING INMARSAT CODE 42. 7. FOR MORE REPORTING INFORMATION OR TO DOWNLOAD SHAPEFILES AND WEEKLY…
North american ice service (nais) iceberg bulletin 100001Z sep → - NAVAREA IV 863/26 · Icebergs · Labrador Sea2026-09-08
…NEAREST CANADIAN COAST GUARD MARINE COMMUNICATIONS AND TRAFFIC SERVICE STATION OR USING INMARSAT CODE 42. 8. FOR MORE REPORTING INFORMATION OR TO DOWNLOAD SHAPEFILES AND WEEKLY…
North american ice service (nais) iceberg bulletin 090001Z sep → - NAVAREA IV 860/26 · Icebergs · Labrador Sea2026-09-07
…NEAREST CANADIAN COAST GUARD MARINE COMMUNICATIONS AND TRAFFIC SERVICE STATION OR USING INMARSAT CODE 42. 8. FOR MORE REPORTING INFORMATION OR TO DOWNLOAD SHAPEFILES AND WEEKLY…
North american ice service (nais) iceberg bulletin 080001Z sep →
Earliest in the archive
- NAVAREA IV 245/94 · Incidents1994-03-17
…PORTSMOUTH, VIRGINIA; MIAMI, FLORIDA; AND NEW ORLEANS, LOUISIANA). VESSELS WITH INMARSAT CAN CONTACT THE USCG ATLANTIC AREA OPERATIONS CENTER AT (212) 668-7055 OR THE USCG…
Maritime smuggling of undocumented aliens has dramatically increased →
Often in the same message
Related terms
- GMDSS
- The Global Maritime Distress and Safety System: the internationally agreed set of radio services ships use for distress alerting and safety broadcasts.
- Maritime Safety Information (MSI)
- Navigational and meteorological warnings, forecasts and other urgent safety messages broadcast to ships.
- MRCC (Maritime Rescue Coordination Centre)
- A rescue coordination centre for maritime cases only, such as MRCC Fort-de-France or MRCC Vietnam.
Counts cover the messages in this archive that use the term, recounted 2026-09-24; see coverage for what is collected and since when. Not for navigation — follow official NAVAREA and coastal broadcasts.