Maritime Safety Information (MSI)
Also written: MSI
Navigational and meteorological warnings, forecasts and other urgent safety messages broadcast to ships.
Maritime Safety Information is the SOLAS term for everything broadcast to keep ships safe: navigational warnings, weather warnings and forecasts, and search-and-rescue information. Every warning in this archive is MSI.
The phrase appears in texts mostly as a pointer — NGA's in-force summaries direct mariners to its Maritime Safety Information website for the complete text of warnings still in force. seahazards re-renders these messages for awareness; it is not an MSI service and is not for navigation.
What the archive shows
704 messages in this archive use “Maritime Safety Information (MSI)”, the earliest issued 1993-09-02 and the latest 2020-12-15. None 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 2012, with 79 messages.
Other accounts for 583 of 704 recorded messages (83%), the largest warning type group in this selection.
Located messages that use it fall in 2 sea areas; the most frequent are South Pacific Ocean (5) and Persian Gulf (2).
Messages that use it are issued most often in January (75 across all years) and least often in December (43).
By warning series: HYDROPAC 169, NAVAREA XII 159, NAVAREA IV 158 and HYDROLANT 152, and 1 more.
Messages using it, by year of issue
By month of issue, all years
Where it appears · 2 sea areas
How it reads in recent messages
- NAVAREA XII 570/20 · Nav aids2020-12-14
…A NUMBERED SERIES DURING THE "ON TRIAL" PHASE IN ACCORDANCE WITH THE JOINT IMO/IHO/WMO MARITIME SAFETY INFORMATION MANUAL. MESSAGES MAY BE INTERMITTENT AND WILL ALSO BE SUPPLEMENTED BY TEST MESSAGES…
Notification of on trial implementation of the iridium safetycast service → - NAVAREA IV 1209/20 · Nav aids2020-12-14
…OF A NUMBERED SERIES DURING THE ON TRIAL PHASE IN ACCORDANCE WITH THE JOINT IMO/IHO/WMO MARITIME SAFETY INFORMATION MANUAL. MESSAGES MAY BE INTERMITTENT AND WILL ALSO BE SUPPLEMENTED BY TEST MESSAGES…
Notification of on trial implementation of the iridium safetycast service → - HYDROARC 71/19 · Other2019-05-03
1. THE POINTS OF CONTACT EMAIL ADDRESSES LISTED UNDER THE "CONTACT INFO" LINK ON THE NGA MARITIME SAFETY INFORMATION (MSI) WEBSITE WERE UNUSABLE STARTING 01 MAR. THIS INCLUDED ALL MARITIME CUSTOMER…
The points of contact email addresses listed under the "contact info" link on the nga maritime safety… → - HYDROPAC 1494/19 · Other2019-05-03
1. THE POINTS OF CONTACT EMAIL ADDRESSES LISTED UNDER THE "CONTACT INFO" LINK ON THE NGA MARITIME SAFETY INFORMATION (MSI) WEBSITE WERE UNUSABLE STARTING 01 MAR. THIS INCLUDED ALL MARITIME CUSTOMER…
The points of contact email addresses listed under the "contact info" link on the nga maritime safety… → - HYDROLANT 1376/19 · Other2019-05-03
1. THE POINTS OF CONTACT EMAIL ADDRESSES LISTED UNDER THE "CONTACT INFO" LINK ON THE NGA MARITIME SAFETY INFORMATION (MSI) WEBSITE WERE UNUSABLE STARTING 01 MAR. THIS INCLUDED ALL MARITIME CUSTOMER…
The points of contact email addresses listed under the "contact info" link on the nga maritime safety… → - HYDROLANT 3287/18 · Nav aids2018-10-19
NGA MARITIME SAFETY INFORMATION WATCH IS DEGRADED IN ITS ABILITY TO MONITOR MESSAGES IN THE ATLANTIC OCEAN REGION AND…
Nga maritime safety information watch is degraded in its ability to monitor messages in the atlantic ocean… → - HYDROARC 60/18 · Other2018-05-04
NGA MARITIME SAFETY INFORMATION WEBSITE UNUSABLE. FOR URGENT SERVICE, CONTACT NGA NAVSAFETY, DSN: 547 5455, COMM: 800…
For urgent service, contact nga navsafety, dsn: 547 5455, comm: 800 362 6289 or 571 557 5455, e-mail:… → - NAVAREA XII 185/18 · Other2018-05-04
NGA MARITIME SAFETY INFORMATION WEBSITE UNUSABLE. FOR URGENT SERVICE, CONTACT NGA NAVSAFETY, DSN: 547 5455, COMM: 800…
For urgent service, contact nga navsafety, dsn: 547 5455, comm: 800 362 6289 or 571 557 5455, e-mail:… →
Earliest in the archive
- HYDROPAC 850/93 · Incidents1993-09-02
1. COMMENCING 1 AUGUST 1993, WORLDWIDE NAVTEX SERVICE OF MARITIME SAFETY INFORMATION (MSI) BROADCASTS UNDER THE WORLDWIDE NAVIGATIONAL WARNING SERVICE IS OPERATIONAL. FOR A…
Commencing 1 august 1993, worldwide NAVTEX service of maritime safety information (msi) broadcasts under the… →
Often in the same message
Related terms
- NAVAREA
- One of the 21 ocean areas of the World-Wide Navigational Warning Service, each with a coordinator that broadcasts long-range warnings.
- NAVTEX
- An automated medium-frequency radio service that sends coastal warnings as text to a small printer or screen on board.
- In force
- Currently valid: broadcast and not yet cancelled.
- GMDSS
- The Global Maritime Distress and Safety System: the internationally agreed set of radio services ships use for distress alerting and safety broadcasts.
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.