Surveys
Survey operations in progress until 26 jul by m/ ramform tethys towing 12 600 meter long cables in area…
Western South Atlantic · Brazil · HYDROLANT 1830/22
- issued
- 2022-07-22 03:19Z
- status
- cancelled 2022-07-27 00:01Z (archive)
- self-cancels
- 2022-07-27 00:01Z
- cancels
- HYDROLANT 1803/22
- authority
- NAVAREA V 366/22 220225Z JUL 22.
- sea
- South Atlantic Ocean
- position
- -22.007, -39.778
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL. DNC 01. 1. SURVEY OPERATIONS IN PROGRESS UNTIL 26 JUL BY M/ RAMFORM TETHYS TOWING 12 600 METER LONG CABLES IN AREA BOUND BY 21-49.47S 039-51.33W, 21-49.51S 039-37.02W, 22-02.41S 039-37.06W, 22-02.41S 039-38.14W, 22-11.45S 039-38.14W, 22-11.43S 039-50.39W, 22-10.25S 039-50.39W, 22-10.25S 039-57.46W, 22-01.14S 039-57.36W, 22-01.14S 039-54.00W, 21-55.31S 039-53.58W, 21-53.01S 039-59.31W. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 1803/22. 3. CANCEL THIS MSG 270001Z JUL 22.
This area · survey operations
714 within 180 nm since 2000 · 23 in the last 12 months · 15 in force now
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- 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
- Underwater operations 1100Z to 2100Z daily 18 thru 28 aug by M/V spar aries and M/V comando b in 20-48.85S…2026-08-17
Season · when survey operations happen here
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month of issue, all years in the archive
Timeline
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 · 21.1 nm
- Underwater operations in progress until 170259Z aug in 22-22.48S 040-25.05WSurveys · 41.8 nm
- Underwater operations 1000Z to 2000Z daily until 02 nov 26 by M/V fugro vaquita in: a. 22-26.32S 040-25.47WSurveys · 44.2 nm
- Underwater operations in progress until 140001Z nov by M/V fugro vaquita in area bound by 22-03.00S…Surveys · 54.8 nm
- Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 54.9 nm
- Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 57.9 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 · 58.6 nm
- Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 59 nm
- RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 71 nm
- Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 78.2 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 · 87.7 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 · 98.9 nm
Worldwide now
83 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.