Navigational warnings: a quick method to update your NAVAREA folder

One of the navigational officer’s duties during route planning and execution is to check the route for the presence of temporary hazards: new rigs, seismic vessels with 10 km cables, drifting containers, oceanographic works, fire exercises, etc.

If a vessel is in the same area for a long time, then tracking routine messages by NAVTEX or INMARSAT C is not difficult, and you are usually well familiar with the situation. However, if you transfer to a new area, you need to get the most updated information for the passage plan.

So, usually, the ship obtains NAVAREA by INMARSAT C, and the Coastal Navigational Warnings by NAVTEX. You might also get NAVTEX messages directly on the ECDIS screen, but it might not always work. Coastal Messages, actually, are no less important, and sometimes even more, because they reflect immediate problems or dangers within the coastal voyage. Nowadays, more and more ships have internet access, and a lot of sailors access to the internet in ports from their mobile devices.

So, based on the theory that laziness is driving mankind, and specifically the type of laziness that makes us think about how to simplify one's life, we may do as follows.

Having internet access, you can check the current NAVAREA warnings and Coastal navigational warnings in a given navigation area.

1st useful link:

NAVAREA co-ordinators websites


On this website, you can find links to all NAVAREA coordinators' sites, except for the Russian Federation. As indicated on the website, the RF does not provide such information.

Down below I listed all the links by area, as not all links on the site are convenient. Some are in Spanish or French, and some may not always be immediately found.

NAVAREA I: United Kingdom Hydrographic Office


NAVAREA III: Armada Espanola

NAVAREA IV, XII: National Geospatial Intelligence Agency

NAVAREA V: Brazilian Directorate of Hydrography and Navigation

NAVAREA VI: Argentina Naval Hydrographic Service

NAVAREA VII: South African Navy Hydrographic Office

NAVAREA VIII: Indian Naval Hydrographic Department

NAVAREA IX: Pakistan Navy

NAVAREA X: Australian Maritime Safety Authority

NAVAREA XI: Hydrographic and Oceanographic Department Japan Coast Guard

NAVAREA XIV: Land information New Zealand

NAVAREA XVI: Peru Directorate Hydrography and Navigation

NAVAREA XV: Chilean Navy Hydrographic and Oceanographic Service

NAVAREA XVII & XVIII: Canadian Coastguard

NAVAREA XIX: Norwegian Coastal Administration


Following these links you can find both NAVAREA messages and Coastal Warnings.

For example, the British Admiralty site:


There is also "Low Bandwidth" button on the Admiralty site, specifically for the users with slow internet connection.

What worth special acknowledgement is the NAVAREA IV: National Geospatial Intelligence Agency website.


From this site you can download a file with all the NAVAREA warnings (for all regions) and display their positions, as well as frames, on Google Earth.


The layer for displaying the NAVAREA on the Google Earth can be turned on here:


Dear colleagues, I hope this information was useful for you. Save your time, work more efficiently, and follow us.


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