Surveys
Underwater operations 0900Z to 2100Z daily 13 jun thru 27 aug by M/V anchieta in 21-19.28S 040-03.68W
Western South Atlantic · Brazil-southeast Coast · HYDROLANT 1584/21
- issued
- 2021-06-13 04:38Z
- status
- cancelled 2021-06-25 11:58Z (archive)
- cancels
- HYDROLANT 1583/21
- authority
- NAVAREA V 251/21 130222Z JUN 21.
- position
- -21.321, -40.061
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-SOUTHEAST COAST. DNC 01. 1. UNDERWATER OPERATIONS 0900Z TO 2100Z DAILY 13 JUN THRU 27 AUG BY M/V ANCHIETA IN 21-19.28S 040-03.68W. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 1583/21. 3. CANCEL THIS MSG 28 AUG 21.
This area · survey operations
601 within 180 nm since 2000 · 15 in the last 12 months · 15 in force now
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- Underwater operations 1100Z to 2100Z daily 15 thru 29 aug by M/V comando b and M/V rosco banyan in 20-23.37S…2026-08-14
- Underwater operations 1100Z to 2100Z daily 12 thru 21 aug by M/V comando b and M/V faneromeni in 20-23.67S…2026-08-13
- Underwater operations 1100Z to 2100Z daily 13 thru 22 aug by M/V comando b and M/V am kirti in 20-23.90S…2026-08-13
- Underwater operations in progress until 27 aug by M/V navios felix and M/V comando b in 20-22.12S 040-08.38W2026-08-13
- Underwater operations 0800Z to 1800Z daily 11 thru 25 aug by M/V comando b and M/V faneromeni in 20-23.00S…2026-08-10
- Survey operations 10 aug 26 thru 08 mar 27 by tug mce navegacao I in area bound by 22-48.38S 041-08.21W,…2026-08-09
Season · when survey operations happen here
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month of issue, all years in the archive
Timeline
- Underwater operations 130900Z jun thru 272100Z aug by M/V anchieta in 21-19.28S 040-03.68Wcancels · 2021-06-13
- Underwater operations 130900Z jun thru 272100Z aug by M/V anchieta in 21-19.28S 040-03.68Wreplaced · 2021-06-13
- HYDROLANT warnings in force as of 251153Z jun 21: 1684/21, 1683/21, 1682/21, 1681/21, 1680/21, 1679/21,…cancelled by · 2021-06-25
Nearby now · within 120 nm
- Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 40.1 nm
- Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 50.5 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 · 52.2 nm
- Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 52.7 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 · 55.7 nm
- Underwater operations 1100Z to 2100Z daily 12 thru 21 aug by M/V comando b and M/V faneromeni in 20-23.67S…Surveys · 55.9 nm
- Underwater operations 0800Z to 1800Z daily 08 thru 22 aug by M/V marsanne and M/V comando b in 20-23.57S…Surveys · 56 nm
- Underwater operations 1100Z to 2100Z daily 15 thru 29 aug by M/V comando b and M/V rosco banyan in 20-23.37S…Surveys · 56.3 nm
- Underwater operations 0800Z to 1800Z daily 11 thru 25 aug by M/V comando b and M/V faneromeni in 20-23.00S…Surveys · 56.5 nm
- Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 57 nm
- Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 57.2 nm
- Underwater operations in progress until 27 aug by M/V navios felix and M/V comando b in 20-22.12S 040-08.38WSurveys · 57.4 nm
Worldwide now
73 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.