Surveys
Survey operations in progress 12 thru 21 jan by M/V polarcus naila towing 12 7000 meter long cables in area…
Western South Atlantic · Brazil-southeast Coast · HYDROLANT 120/21
- issued
- 2021-01-12 21:38Z
- status
- cancelled 2021-01-19 21:48Z (archive)
- cancels
- HYDROLANT 35/21
- authority
- NAVAREA V COASTAL E 20/21 122120Z JAN 21.
- sea
- South Atlantic Ocean
- position
- -22.341, -39.993
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-SOUTHEAST COAST. DNC 01. 1. SURVEY OPERATIONS IN PROGRESS 12 THRU 21 JAN BY M/V POLARCUS NAILA TOWING 12 7000 METER LONG CABLES IN AREA BOUND BY 21-58.5S 039-41.5W, 22-00.3S 039-37.5W, 22-41.8S 039-54.4W, 22-40.1S 039-58.5W, 22-23.8S 040-22.3W, 22-08.1S 040-13.4W, 22-11.4S 040-07.3W, 22-06.1S 039-48.8W. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 35/21. 3. CANCEL THIS MSG 22 JAN 21.
This area · survey operations
745 within 180 nm since 2000 · 24 in the last 12 months · 15 in force now
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- 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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month of issue, all years in the archive
Timeline
- Survey operations in progress until 13 jan by M/V polarcus naila towing 12 7000 meter long cables in area…cancels · 2021-01-06
- Survey operations in progress until 13 jan by M/V polarcus naila towing 12 7000 meter long cables in area…replaced · 2021-01-06
- Survey operations in progress thru 27 jan by M/V polarcus naila towing 12 7000 meter long cables in area…cancelled by · 2021-01-19
Nearby now · within 120 nm
- Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 4.4 nm
- Underwater operations in progress until 170259Z aug in 22-22.48S 040-25.05WSurveys · 23.7 nm
- Underwater operations 1000Z to 2000Z daily until 02 nov 26 by M/V fugro vaquita in: a. 22-26.32S 040-25.47WSurveys · 24.4 nm
- Underwater operations in progress until 140001Z nov by M/V fugro vaquita in area bound by 22-03.00S…Surveys · 36.5 nm
- Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 49.8 nm
- Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 51.1 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 · 54.7 nm
- RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 61.6 nm
- Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 61.7 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 · 67.2 nm
- Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 82.1 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 · 117 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.