Surveys
Underwater operations 130900Z to 312000Z oct along trackline joining 04-52.52S 036-22.30W, 04-52.52S…
Brazil-north Coast · HYDROLANT 1664/11
- issued
- 2011-10-10 02:36Z
- status
- cancelled 2011-10-31 21:00Z (archive)
- self-cancels
- 2011-10-31 21:00Z
- authority
- NAVAREA V N 888/11 100029Z OCT 11.
- sea
- South Atlantic Ocean
- position
- -4.876, -36.373
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
BRAZIL-NORTH COAST. 1. UNDERWATER OPERATIONS 130900Z TO 312000Z OCT ALONG TRACKLINE JOINING 04-52.52S 036-22.30W, 04-52.52S 036-22.32W, 04-52.58S 036-22.43W. 2. CANCEL THIS MSG 312100Z OCT.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2011-10-13 09:00Z | 2011-10-31 20:00Z | — | 443 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
90 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
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- Survey operations in progress until 241000Z apr by M/V taurus in area bound by 06-56.53S 034-49.48W,…2024-03-16
- Survey operations in progress until 092100Z mar by M/V taurus in area bound by 06-50.45S 034-45.38W,…2024-03-05
- 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
- Underwater operations 1100Z to 1900Z daily 15 thru 22 jun by M/V texas and M/V seamaster I in 05-42.08S…2021-06-14
- Underwater operations 1100Z to 1900Z daily 01 thru 06 jun by M/V texas and M/V seamaster I in 05-42.08S…2021-05-31
Season · when survey operations happen here
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month of issue, all years in the archive
Nearby now · within 120 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.