Surveys
Underwater operations 1000Z to 2000Z daily 26 thru 31 aug by M/V river sub I in 03-34.78S 038-44.48W
Western South Atlantic · Brazil-north Coast · HYDROLANT 2607/17
- issued
- 2017-08-26 06:13Z
- status
- cancelled 2017-08-31 21:00Z (archive)
- self-cancels
- 2017-08-31 21:00Z
- authority
- NAVAREA V COASTAL N 685/17 260157Z AUG 17.
- position
- -3.580, -38.741
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-NORTH COAST. DNC 01. 1. UNDERWATER OPERATIONS 1000Z TO 2000Z DAILY 26 THRU 31 AUG BY M/V RIVER SUB I IN 03-34.78S 038-44.48W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 312100Z AUG 17.
This area · survey operations
76 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
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- Survey operations in progress until 182300Z may in areas bound by: a. 02-56.00S 038-00.20W, 02-56.00S…2023-05-18
- Underwater operations 0800Z to 2100Z daily 05 sep thru 05 mar 23 by M/V paracuru in 04-52.42S 036-22.45W2022-09-05
- Survey operations in progress 0800Z to 1700Z daily until 23 jul by M/V raisa II in area bound by 03-43.71S…2020-07-17
- Underwater operations 0900Z to 2100Z daily 15 aug thru 15 dec by M/V asso trentuno, M/V surffer 1871, M/V…2019-08-14
- Underwater operations 0900Z to 2100Z daily 02 aug thru 15 dec by M/V surffer 1871, M/V surffer 1930 and M/V…2019-08-01
- Underwater operations 0800Z to 2300Z daily 01 thru 15 jul by M/V sentosa, barge smitbarge 1 and M/V corenav…2019-06-30
Season · when survey operations happen here
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month of issue, all years in the archive
Nearby now · within 120 nm
Nothing else in force within 120 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.