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analysis
Activeuntil 20 Nov 2026, 23:59 UTC (in 15 days)Hydrographic surveys in Tagus estuary (Algés, Cacilhas, Parque das Nações, Alhos Vedros) 2-20 Nov
A hydrographic survey by an Instituto Hidrográfico vessel (ROAZ) will take place in four areas of the estuary of the river Tejo: Algés, Cacilhas, Parque das Nações and Alhos Vedros. The works run from 2 November to 20 November 2026 and are defined by multiple positions given in the warning. All navigation is requested to proceed with caution and provide the necessary clearance.
Proceed with caution and ensure necessary clearance (garantir o necessário resguardo). Maintain lookout and pass at safe distance from survey vessel and equipment.
- Type
- Survey operations · severity moderate
- Feed
- Survey operationsAll warnings of this kind on the map (contributors), or as an API feed: /api/v2/feeds/survey/
- Location
- Estuary of the river Tejo - Algés, Cacilhas, Parque das Nações and Alhos Vedros
- Validity
- From 02 Nov 2026, 00:00 UTC
Until 20 Nov 2026, 23:59 UTCNo período de 2 a 20 de novembro de 2026 - Activity periods
- 02 Nov 2026, 00:00 UTC - 20 Nov 2026, 23:59 UTC (Survey operations in the four named areas (Algés, Cacilhas, Parque das Nações, Alhos Vedros))
- Hazards
- hydrographic survey operations, survey vessel and towing gear
Vessels involved
- ROAZ · survey vessel
Coast stations for this area
- RCCMRSC HuelvaSpain139 NM from the area
- RCCMRSC CadizSpain191 NM from the area
- RCCMRSC VigoSpain213 NM from the area
- DSCDSC Station HuelvaMRSC HuelvaSpainMMSI 002241023VHF 35range 35 NM135 NM from the area
- DSCDSC Station ChipionaMRCC TarifaSpainMMSI 002241023MF 150range 150 NM182 NM from the area
- DSCDSC Station La GuardiaMRCC FinisterreSpainMMSI 002241022VHF 35range 35 NM191 NM from the area
- DSCDSC Station CadizMRSC CadizSpainMMSI 002241023VHF 35range 35 NM199 NM from the area
- DSCDSC Station VigoMRSC VigoSpainMMSI 002241022VHF 35range 35 NM209 NM from the area
Generated automatically from the warning text on 02 Nov 2026, 10:17 UTC. It can be wrong: the original warning below is the authoritative text.