Three types:
Issued by navarea coordinator for the navarea. | |
For 16 navareas established by WWNWS (World Wide Navigational Warning Service) | |
Immediate notification of new danger and changes in navigational aids. | |
Warnings which ocean going ships normally require for safe navigation. | |
Promulgated via NAVTEX, International Safety Net Service. | |
In English. |
Promulgated by a national coordinator to cover a region. | |
Necessary for safe navigation within a given region. | |
Provides information for seaward of the fairway buoy or pilot stations. | |
For the entire IMO approved service area of Navtex transmitter. | |
If no Navtex transmitter provided, includes all warnings relevant to coastal waters up to 250 miles from coast. | |
Issued by Navtex or International Safety Net Service Transmission. | |
In English. |
Issued by port, pilotage or coastguard authority. | |
Covers inshore waters. | |
Supplements coastal warnings by giving details information. | |
Ocean going ships normally not require. | |
Broadcasted via VHF, Navtex local frequency. | |
May be in English or local language. |
Source: IMO RESOLUTION A.706(17), as amended.
Updated: Saturday, 15 September 2007