{"id":"acd3c191-1847-44e7-9550-e8fbf1ff4aff","type":"DATASET","name":"AVURNAVs","slug":"avurnavs","description":"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.","free_access_class":"FREE_NO_AUTH","auth_type":"NONE","homepage_url":null,"docs_url":null,"repo_url":"https://www.data.gouv.fr/api/1/datasets/r/ac7f6a84-46d7-4297-aa46-a4e2308b7bb5","status":"ACTIVE","verification_state":"STALE","tags":["transport","environment","geospatial"],"logo_url":"https://www.google.com/s2/favicons?sz=64&domain=data.gouv.fr","primary_source_url":"https://www.data.gouv.fr/api/1/datasets/r/ac7f6a84-46d7-4297-aa46-a4e2308b7bb5","extraction_confidence":"0.34","created_at":"2026-06-24T18:58:02.323Z","updated_at":"2026-08-15T04:31:01.182Z","last_verified_at":"2026-08-12T04:11:32.187Z","deprecated_at":null,"ranking_score":56,"last_ranked_at":"2026-08-10T00:08:52.265Z","last_seen_at":null,"last_validated_at":null,"last_uptime_at":null,"search_vector":"'16':101B,351B '182':107B,357B '2':106B,356B 'a':394B,471B,482B 'abbrevi':75B 'abbreviated':325B 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'exercises':427B 'fire':20B,270B 'for':437B,476B 'franc':79B,86B,159B,191B 'france':329B,336B,409B,441B 'french':246B,496B 'frequenc':105B 'frequency':355B 'geospati':250C 'harbour':120B,210B,370B,460B 'have':400B 'histor':233B 'histori':145B 'historical':483B 'history':395B 'hydrograph':31B 'hydrographic':281B 'identifi':47B,192B 'identifies':442B 'identify':297B 'iho':29B,185B,279B,435B 'imo':23B,183B,273B,433B 'in':305B,317B,328B,335B,343B,368B,391B 'includ':200B,220B 'includes':470B 'including':450B 'inform':62B 'information':312B 'inmarsat':111B,204B,361B,454B 'intern':24B,30B,68B 'international':274B,280B,318B 'is':313B,337B 'issu':152B,165B,237B 'issued':402B,415B,487B 'khz':108B,358B 'life':42B,292B 'lighthous':18B,174B 'lighthouse':268B 'lighthouses':424B 'list':134B 'lists':384B 'make':206B 'makes':456B 'marin':5A,164B 'mariners':255A,414B 'maritim':25B,130B,215B,240B 'maritime':275B,380B,465B,490B 'master':121B,211B,371B,461B 'may':10B,178B,260B,428B 'militari':19B,176B 'military':269B,426B 'miss':15B,171B 'missing':265B,421B 'navig':13B,54B,65B,74B,181B,196B,243B 'navigation':263B,304B,431B,493B 'navigational':315B,446B 'navigators':324B 'navtex':109B,202B,359B,452B 'notic':3A,72B,162B,238B 'notices':253A,322B,412B,488B 'of':287B,291B,332B,378B,396B,485B 'offic':123B,213B 'offices':373B,463B 'on':349B,353B,375B 'opinion':113B 'opinions':363B 'or':352B,360B,425B 'organ':26B,32B 'organization':276B,282B 'particular':94B,344B 'plan':244B 'planning':494B 'potenti':51B 'potential':301B 'prefect':131B 'prefects':381B 'prefectur':216B 'prefecture':466B 'previous':236B 'previously':486B 'provid':155B 'provides':405B 'real':142B,223B,392B,473B 'real-tim':222B 'real-time':472B 'requir':33B,186B 'require':283B 'requirements':436B 'respons':60B 'responsibility':310B 's':372B,410B,462B 'safe':12B,180B,262B,430B 'safeti':40B,241B 'safety':290B,491B 'sea':8B,44B,90B,258B,294B,340B 'semaphor':96B,201B 'semaphores':346B,451B 'signatori':35B,189B 'signatory':285B,439B 'site':127B 'sites':377B 'sola':39B,188B 'solas':289B,438B 'state':36B,190B 'states':286B,440B 'such':418B,445B 'support':239B 'supporting':489B 'that':399B 'the':272B,278B,284B,288B,300B,306B,330B,354B,369B,376B,379B,397B,468B 'their':309B 'them':457B 'these':333B,362B,389B 'this':311B,382B,403B 'time':143B,224B,393B,474B 'to':254A,296B,303B,323B,387B,407B,413B 'transport':248C 'under':308B,432B 'urgent':2A,71B,161B,252A,321B,411B 'vhf':92B,199B,342B,449B 'via':198B,448B 'warn':66B,197B 'warnings':316B,447B 'water':57B 'waters':307B 'websit':217B 'websites':467B 'well':230B,480B 'when':416B 'wreckag':14B,170B 'wreckage':264B,420B","popularity_score":"0.0000","maintenance_score":"0.7000","institution_id":"7abf1844-58f2-4b35-a86e-1e4a6b7652f7","institution_type":"AGENCY","country_code":"FR","official_confidence":null,"proof_summary":null,"source_seed_url":null,"is_public_sector":true,"published_at":"2026-06-24T18:58:02.323Z","geographic_scope":"NATIONAL","name_en":"Urgent Notices to Mariners (AVURNAV)","description_en":"This dataset provides access to AVURNAV, France's urgent notices to mariners, issued when events such as wreckage, missing buoys, damaged lighthouses, or military exercises may disrupt safe navigation. Under IMO and IHO requirements for SOLAS signatory states, France identifies and disseminates such navigational warnings via VHF (including semaphores), NAVTEX, and Inmarsat, and makes them available at harbour master's offices and maritime prefecture websites. The dataset includes a real-time API for current AVURNAVs as well as a historical archive of previously issued notices, supporting maritime safety and navigation planning along French coasts.","native_lang":"fr","access_level":"documented","formats":[],"capability_tier":"reference","trust_score":35.83333333333333,"access":{"level":"documented","primary":{"kind":"query","label":"Run verified request","method":"GET","url":"https://www.data.gouv.fr/api/1/datasets/r/ac7f6a84-46d7-4297-aa46-a4e2308b7bb5","source":"probe","runnable":true},"actions":[{"kind":"query","label":"Run verified request","method":"GET","url":"https://www.data.gouv.fr/api/1/datasets/r/ac7f6a84-46d7-4297-aa46-a4e2308b7bb5","source":"probe","runnable":true}],"formats":[]},"maturity":{"entry_id":"acd3c191-1847-44e7-9550-e8fbf1ff4aff","granularity":"entry","granularity_label":"One unit = one catalog entry. 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Never compare or combine with the source_family reading.","level":"discovered","level_index":1,"level_label":"Discovered","meaning":"Source and metadata recorded","counts_as_coverage":false,"blocked_by":null,"rungs":[{"level":"discovered","level_index":1,"label":"Discovered","meaning":"Source and metadata recorded","evidence":"membership of the named population the ladder is taken over","counts_as_coverage":false,"met":true,"reached":true,"criterion":"TRUE"},{"level":"verified","level_index":2,"label":"Verified","meaning":"Access tested successfully","evidence":"entries.verification_state = 'VERIFIED'","counts_as_coverage":false,"met":false,"reached":false,"criterion":"entries.verification_state = 'VERIFIED'"},{"level":"profiled","level_index":3,"label":"Profiled","meaning":"Schema, dimensions and licence understood","evidence":"a data profile with at least one field (entry_data_profiles.field_count > 0)","counts_as_coverage":false,"met":false,"reached":false,"criterion":"EXISTS (SELECT 1 FROM entry_data_profiles p WHERE p.entry_id = entries.id AND COALESCE(p.field_count, 0) > 0)"},{"level":"executable","level_index":4,"label":"Executable","meaning":"Queries run through Commodity","evidence":"entries.capability_tier = 'live' — today's proxy for \"queryable through us\"","counts_as_coverage":true,"met":false,"reached":false,"criterion":"entries.capability_tier = 'live'"},{"level":"joinable","level_index":5,"label":"Joinable","meaning":"Canonical identifiers and concepts mapped","evidence":"a field link to a canonical identifier whose sampled VALUES match its format","counts_as_coverage":true,"met":false,"reached":false,"criterion":"EXISTS (SELECT 1 FROM entry_field_links efl WHERE efl.entry_id = entries.id AND efl.identifier_id IS NOT NULL AND efl.value_status = 'match')"},{"level":"reproducible","level_index":6,"label":"Reproducible","meaning":"Snapshots and transformation evidence retained","evidence":"at least one retained evidence manifest (migration 078)","counts_as_coverage":true,"met":false,"reached":false,"criterion":"EXISTS (SELECT 1 FROM evidence_manifests em WHERE em.entry_id = entries.id)"},{"level":"guaranteed","level_index":7,"label":"Guaranteed","meaning":"Monitored against an operational reliability target","evidence":"an active reliability target with a named monitor (migration 096)","counts_as_coverage":true,"met":false,"reached":false,"criterion":"EXISTS (SELECT 1 FROM entry_reliability_targets rt WHERE rt.entry_id = entries.id AND rt.is_active = true)"}],"officialness":{"basis":"catalog_inherited","label":"Inherited from the upstream catalog: this item came from a trusted official government catalog, and that provenance — not per-item proof — is the warrant. 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