S 8402/26
Survey and environmental monitoring by USV in Baia de Guanabara, May-Nov 2026
Activeuntil 16 Nov 2026, 04:00 UTC (in 9 days)Received 22 Jul 2026, 10:41 UTC
Warning text
Positions open on the mapBAIA DE GUANABARA
CHART 1501
SERVICOS DE SONDAGEM E MONITORAMENTO AMBIENTAL
150300 UTC MAI A 160300 UTC NOV 2026
POR USV TUPAN III
IN AREA BOUND BY
22-55.13S 043-10.30W
22-55.08S 043-10.01W
22-55.15S 043-08.82W
22-56.34S 043-08.14W
22-57.17S 043-07.12W
22-58.56S 043-03.32W
22-59.92S 043-03.87W
23-04.74S 043-08.18W
23-04.99S 043-13.71W
23-01.87S 043-17.53W
22-59.93S 043-11.74W
22-57.96S 043-08.56W
22-56.22S 043-09.06W
22-55.23S 043-10.04W
CANCEL LOCAL S 8376/26
CANCEL THIS WARNING 160400 UTC NOV 26.
Location map
Open on the full mapAnalysis
Activeuntil 16 Nov 2026, 04:00 UTC (in 9 days)Unmanned surface vehicle (USV) TUPAN III conducting sounding and environmental monitoring in Baia de Guanabara. Activity applies in the polygon defined by the listed positions. Period: 150300 UTC May to 160300 UTC November 2026 (self-cancels 160400 UTC 16 Nov 2026). Cancels LOCAL S 8376/26.
Navigate with caution and keep clear of survey/USV operations in the stated area.
- Type
- Survey operations · severity moderate
- Feed
- Survey operationsAll warnings of this kind on the map, or as an API feed.
- Location
- Baia de Guanabara
- Validity
- From 15 May 2026, 03:00 UTC
Until 16 Nov 2026, 04:00 UTC150300 UTC MAI A 160300 UTC NOV 2026. CANCEL THIS WARNING 160400 UTC NOV 26. - Activity periods
- 15 May 2026, 03:00 UTC - 16 Nov 2026, 03:00 UTC (150300 UTC May to 160300 UTC Nov 2026 - USV operations)
- Hazards
- USV survey operations, environmental monitoring
- Cancels
- LOCAL S 8376/26
- Charts
- CHART 1501
Vessels involved
- TUPAN III · survey vessel (USV)
Coast stations for this area
- RCCMRCC BrazilBrazil1 NM from the area
- DSCDSC Station Rio RadioMRCC BrazilBrazilMMSI 007100001HF28 NM from the area
Worked out automatically from the warning text on 28 Sept 2026, 03:38 UTC. It can be wrong: the official warning text is the authority.