3713/2026
Hydrographic survey on Plateau des Roches Douvres (Casquets), 30 Oct-4 Dec
Activeuntil 04 Dec 2026, 23:59 UTC (in 33 days)Received 30 Oct 2026, 13:13 UTC
Warning text
Lang
Area: CASQUETS
Locality: Plateau des Roches Douvres
Valid from 30 Oct 2026 to 04 Dec 2026
SCIENTIFIC_SURVEY
Hydrographic surveys conducted by a vessel of the Marine Nationale.
Do not interfere with maneuvers - Maintain a distance of 1000m from the vessel.
Instruments will be towed at 300m from the boat.
Zone delimited by:
49-04.759N 002-53.118W
49-13.810N 003-19.507W
48-59.916N 003-20.051W
48-58.779N 002-56.615W
Analysis
Activeuntil 04 Dec 2026, 23:59 UTC (in 33 days)Hydrographic (scientific) survey by a Marine Nationale vessel on the Plateau des Roches Douvres (Casquets). Instruments will be towed about 300 m astern; do not interfere with manoeuvres. Mariners must remain at least 1000 m from the survey vessel. Area bounded by four positions given in the message.
Do not interfere with manoeuvres. Maintain a distance of 1000 m from the survey vessel and navigate with caution in the area.
- Type
- Survey operations · severity moderate
- Feed
- Survey operationsAll warnings of this kind on the map, or as an API feed.
- Location
- Casquets, Plateau des Roches Douvres
- Validity
- From 30 Oct 2026, 00:00 UTC
Until 04 Dec 2026, 23:59 UTCValid from 30 Oct 2026 to 04 Dec 2026 - Activity periods
- 30 Oct 2026, 00:00 UTC - 04 Dec 2026, 23:59 UTC (Hydrographic survey (daily times not specified))
- Hazards
- hydrographic survey, towed instruments
- Keep clear
- 0.54 NMMaintain a distance of 1000m from the vessel.
Vessels involved
- Unnamed · survey vessel (Marine Nationale)
Coast stations for this area
- RCCMRCC JobourgFrance53 NM from the area
- RCCMRCC FalmouthUnited KingdomMMSI 00232001470 NM from the area
- RCCMRSC BrixhamUnited KingdomMMSI 00232001382 NM from the area
- DSCDSC Station Roches DouvresMRCC JobourgFranceMMSI 002275200VHF 25range 25 NM3 NM from the area
- DSCDSC Station BodicMRCC CorsenFranceMMSI 002275300VHF 25range 25 NM19 NM from the area
- DSCDSC Station Batz IslandMRCC CorsenFranceMMSI 002275300VHF 27range 27 NM49 NM from the area
- DSCDSC Station GranvilleMRCC JobourgFranceMMSI 002275200VHF 26range 26 NM52 NM from the area
- DSCDSC Station JobourgMRCC JobourgFranceMMSI 002275200VHF 42range 42 NM53 NM from the area
Worked out automatically from the warning text on 30 Oct 2026, 13:27 UTC. It can be wrong: the official warning text is the authority.