S 9321/26
Hydrographic survey in several bounded areas off 23S, 44W (Chart 1636)
Warning text
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Open on the full mapAnalysis
Activeuntil 01 Dec 2026, 17:00 UTC (in 19 days)Hydrographic survey underway in multiple small polygonal areas defined by positions near 23°S 044°W. Activity from 100930 UTC Nov 2026 until 011700 UTC Dec 2026. Mariners are warned of survey operations within the listed areas. Message cancels itself at 011800 UTC Dec 26.
- Type
- Survey operations · severity moderate
- Feed
- Survey operationsAll warnings of this kind on the map, or as an API feed.
- Location
- Area bounded by the positions listed near 23-01S to 23-03S, 044-17W to 044-20W
- Validity
- From 10 Nov 2026, 09:30 UTC
Until 01 Dec 2026, 17:00 UTC100930 UTC NOV 26 TO 011700 UTC DEC 26. CANCEL THIS WARNING 011800 UTC DEC 26. - Activity periods
- 10 Nov 2026, 09:30 UTC - 01 Dec 2026, 17:00 UTC (100930 UTC NOV 26 TO 011700 UTC DEC 26)
- Hazards
- hydrographic survey, survey vessels and survey equipment
Worked out automatically from the warning text on 10 Nov 2026, 11:07 UTC. It can be wrong: the official warning text is the authority.
The whole analysis comes with Lagom
This warning's analysis also has:
- Action for mariners
- Charts
- Translations
- Nearby lights and rescue centres
The action for mariners, the keep-clear distance, contacts, ships named, translations and the nearby lights and rescue centres come with Lagom and every higher plan, and with the API plans. The official warning text above is always free.