1635/2026

Scientific mooring buoy 'HDF' missing in approaches to Boulogne

ActiveReceived 02 Nov 2026, 16:15 UTC

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Area: PAS DE CALAIS Locality: BOULOGNE APPROACHES SCIENTIFIC_MOORING Measurement buoy "HDF" exhibiting characteristics of a special mark is reported missing. Initial position: 50-46.25N 001-29.43E Navigate with caution

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A scientific mooring / measurement buoy marked "HDF" is reported missing in the approaches to Boulogne, Pas de Calais. Initial position given as 50-46.25N 001-29.43E. Mariners are advised to navigate with caution. No dates or contact details are provided.

Type: Aids to navigation · severity low
Feed: Aids to navigationAll warnings of this kind on the map, or as an API feed.
Location: Pas de Calais, approaches to Boulogne
Hazards: missing special mark buoy, scientific mooring

Worked out automatically from the warning text on 08 Nov 2026, 16:27 UTC. It can be wrong: the official warning text is the authority.

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Lights and buoys affected
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