290/2026

Sea trials (acoustic, electric, magnetic) and diver operations in Rade de Brest (Anse du Fret), 5-8 Oct

No longer in forceReceived 02 Oct 2026, 07:42 UTCArchived 08 Oct 2026, 16:29 UTC

Warning text

Area: RADE DE BREST Locality: ANSE DU FRET SEA_TRIALS Au cours de la semaine 41 (du lundi 05 octobre 2026 au vendredi 09 octobre 2026), les activités prévues sur les bases Acoustique, Electrique et Magnétique de Lanvéoc sont : CMT CEPHEE : Lundi 05 octobre 2026 : mesure de nuit Mesures Acoustiques sur la base Grande Profondeur de 19h00 à 02h00. FLF ACONIT : Jeudi 08 octobre 2026 : Mesures Magnétiques sur la base Moyenne Profondeur de 09h00 à 14h00. MCO des bases : Mardi 06 octobre 2026 : Intervention du bâtiment SKRAVIG avec ses plongeurs sur la base Moyenne Profondeur de 09h00 à 13h00. Il est possible que ce programme soit modifié après diffusion de ce fax.

Analysis

No longer in force

Sea-trial measurements (acoustic, electric and magnetic) and a diver intervention by the vessel SKRAVIG will take place in the Rade de Brest, Anse du Fret, during week 41. Specific activity periods are 05 Oct night, 06 Oct morning, and 08 Oct morning. Times in the message are given as clock times (no timezone) and are kept as UTC in this analysis.

Navigate with caution in the area and keep a good lookout during stated periods; avoid the immediate vicinity of measurement and diver activities.

Type: Survey operations · severity moderate
Feed: Survey operationsAll warnings of this kind on the map, or as an API feed.
Location: Rade de Brest, Anse du Fret
Validity: From 05 Oct 2026, 19:00 UTC
Until 08 Oct 2026, 14:00 UTCAu cours de la semaine 41 (du lundi 05 octobre 2026 au vendredi 09 octobre 2026) ... Mesures Acoustiques ... de 19h00 à 02h00. SKRAVIG ... de 09h00 à 13h00. Mesures Magnétiques ... de 09h00 à 14h00. Times as given (no timezone) are treated here as UTC.
Activity periods: 05 Oct 2026, 19:00 UTC - 06 Oct 2026, 02:00 UTC (Acoustic measurements (Grande Profondeur) by CMT CEPHEE - night measurement)
06 Oct 2026, 09:00 UTC - 06 Oct 2026, 13:00 UTC (Intervention by vessel SKRAVIG with divers on Moyenne Profondeur)
08 Oct 2026, 09:00 UTC - 08 Oct 2026, 14:00 UTC (Magnetic measurements (Moyenne Profondeur) by FLF ACONIT)
Hazards: sea trials, acoustic measurements, magnetic measurements, electric measurements, divers in the water, vessel operations

Vessels involved

SKRAVIG · vessel with divers (intervention)
CMT CEPHEE · measurement unit (acoustic)
FLF ACONIT · measurement unit (magnetic)

Worked out automatically from the warning text on 02 Oct 2026, 07:47 UTC. It can be wrong: the official warning text is the authority.

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