Surveys
Underwater operations 031000Z to 042000Z mar in 21-48.48S 040-50.90W
Western South Atlantic · Brazil-southeast Coast · HYDROLANT 642/22
- issued
- 2022-03-03 16:16Z
- status
- cancelled 2022-03-04 21:00Z (archive)
- self-cancels
- 2022-03-04 21:00Z
- authority
- NAVAREA V COASTAL E 161/22 031556Z MAR 22.
- sea
- South Atlantic Ocean
- position
- -21.808, -40.848
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-SOUTHEAST COAST. DNC 01. 1. UNDERWATER OPERATIONS 031000Z TO 042000Z MAR IN 21-48.48S 040-50.90W. 2. CANCEL THIS MSG 042100Z MAR 22.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2022-03-03 10:00Z | 2022-03-04 20:00Z | — | 34 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
This area · survey operations
645 within 180 nm since 2000 · 24 in the last 12 months · 15 in force now
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26
- Underwater operations 0800Z to 1800Z daily 21 aug thru 04 sep by M/V capetan vassilis II and M/V comando b…2026-08-20
- Underwater operations 1100Z to 2100Z daily 20 aug thru 03 sep by M/V charlie and M/V comando b in 20-24.27S…2026-08-19
- Underwater operations 1100Z to 2100Z daily 20 aug thru 03 sep by M/V comando b and M/V linden trader in…2026-08-19
- Underwater operations 1100Z to 2100Z daily 20 aug thru 03 sep by M/V hui an and M/V comando b in 20-23.17S…2026-08-19
- Underwater operations 0800Z to 1800Z daily until 28 aug by M/V spar aries and M/V comando b in 20-48.85S…2026-08-18
- Underwater operations 0800Z to 1800Z daily until 29 aug by M/V comando b and M/V am kirti in 20-19.03S…2026-08-18
Season · when survey operations happen here
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M
A
M
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A
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month of issue, all years in the archive
Nearby now · within 120 nm
- Survey operations in progress until 312200Z aug in area bound by 21-36.17S 041-00.00W, 21-36.05S 040-37.59W,…Surveys · 2.6 nm
- Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 7.9 nm
- Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 9.4 nm
- Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 15.8 nm
- RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 18.1 nm
- Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 30.4 nm
- Underwater operations in progress until 170259Z aug in 22-22.48S 040-25.05WSurveys · 41.6 nm
- Underwater operations 1000Z to 2000Z daily until 02 nov 26 by M/V fugro vaquita in: a. 22-26.32S 040-25.47WSurveys · 45.1 nm
- Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 53.6 nm
- Survey operations 10 aug 26 thru 08 mar 27 by tug mce navegacao I in area bound by 22-48.38S 041-08.21W,…Surveys · 62.8 nm
- Underwater operations in progress until 140001Z nov by M/V fugro vaquita in area bound by 22-03.00S…Surveys · 88.9 nm
- Underwater operations 1100Z to 2100Z daily 13 thru 22 aug by M/V comando b and M/V am kirti in 20-23.90S…Surveys · 93 nm
Worldwide now
84 survey operations in force · see all
Surveys
Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →
Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.