Types of Navigational warnings:

Three types:

  1. Nav area warnings
  2. Coastal warnings
  3. Local warnings

 

1. Nav area warnings:

bullet Issued by navarea coordinator for the navarea.
bullet For 16 navareas established by WWNWS (World Wide Navigational Warning Service)
bullet Immediate notification of new danger and changes in navigational aids.
bullet Warnings which ocean going ships normally require for safe navigation.
bullet Promulgated via NAVTEX, International Safety Net Service.
bullet In English.

 

2. Coastal warnings:

bullet Promulgated by a national coordinator to cover a region.
bullet Necessary for safe navigation within a given region.
bullet Provides information for seaward of the fairway buoy or pilot stations.
bullet For the entire IMO approved service area of Navtex transmitter.
bullet If no Navtex transmitter provided, includes all warnings relevant to coastal waters up to 250 miles from coast.
bullet Issued by Navtex or International Safety Net Service Transmission.
bullet In English.

 

3. Local warnings:

bullet Issued by port, pilotage or coastguard authority.
bullet Covers inshore waters.
bullet Supplements coastal warnings by giving details information.
bullet Ocean going ships normally not require.
bullet Broadcasted via VHF, Navtex local frequency.
bullet May be in English or local language.

 

    Source: IMO RESOLUTION A.706(17), as amended.

        Updated: Saturday, 15 September 2007