Urgent notices to mariners in force in French metropolitan waters
At sea, events may disrupt safe navigation: wreckage, missing buoy, broken lighthouse, military fire, etc. The IMO (International Maritime Organization) and the IHO (International Hydrographic Organization) require the signatory states of the SOLAS (Safety of Life at Sea) Convention to identify and disseminate the potential dangers to navigation in the waters under their responsibility. This information is called navigational warnings in international conventions and "urgent notices to navigators" (abbreviated as AVURNAV) in France. The diffusion of these AVURNAV in France is ensured at sea by VHF, in particular by semaphores, after calling on channel 16 or on the frequency 2 182 kHz, NAVTEX or Inmarsat. These opinions can also be consulted in the harbour master's offices and on the sites of the maritime prefects. This dataset lists: - an API to access these AVURNAVs in real time; - a history of the AVURNAVs that have been issued.
Trust score
How is this computed?Composite of 5 axes from our methodology (proof-based officialness, live verification, metadata completeness, license clarity, agent readiness).
- Officialnessweight 25%50/100
Not public-sector → neutral score; not subject to the proof checker.
- Availabilityweight 25%100/100
Latest verification succeeded.
- Metadata completenessweight 20%50/100
3 of 6 recommended metadata fields populated.
- License clarityweight 15%50/100
License info not yet tracked for APIs (datasets only).
- Agent readinessweight 15%10/100
Topic tags assigned
Data access
This entry links to a dataset, file download, or documentation page rather than a self-describing API, so there's no field schema to display.