Survey operations 19 may thru 01 jun by M/V sirius in area bound by 03-50S 032-40W, 03-57S 032-40W, 03-57S…
South Atlantic Ocean · HYDROLANT 829/11
What this record establishes
Archived notice · 2011-06-02 00:01Z
This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.
- Source and dates
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · NAVAREA V N 416/11 161230Z MAY 11. Issued 2011-05-16 12:49Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- South Atlantic Ocean. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2011-05-16 12:49Z
- status
- Archived notice
- authority
- NAVAREA V N 416/11 161230Z MAY 11
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V N
- sea
- South Atlantic Ocean
- position
- -3.854, -32.461
- vessel
- M/V SIRIUS · 43 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BRAZIL-NORTHEAST COAST. 1. SURVEY OPERATIONS 19 MAY THRU 01 JUN BY M/V SIRIUS IN AREA BOUND BY 03-50S 032-40W, 03-57S 032-40W, 03-57S 032-18W, 03-42S 032-18W. 2. CANCEL THIS MSG 02 JUN.
Reading this warning
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- Position (degrees and minutes)
- How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · survey operations
15 within 180 nm since 2000 · 0 in the last 12 months · 0 listed in force now
Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.
- Survey operations in progress until 15 apr by M/V ocean dream and M/V bgp pioneer eco warrior each towing…2020-03-16
- Survey operations 03 thru 13 mar by M/V bgp pioneer towing 12500 meter long cable in area bound by 04-34.47S…2020-03-03
- Survey operations 02 thru 13 mar by M/V bgp pioneer towing 12500 meter long cable in area bound by 05-26.43S…2020-03-01
- Underwater operations 20 thru 30 nov by M/V navio patrulha araguari in area bound by 05-30S 034-50W, 04-00S…2018-11-21
- Underwater operations in progress until 03 jul by M/V cs record and M/V saga badejo in area bound by 01-53S…2018-03-15
- Survey operations in progress until 04 mar by M/V bgp challenger towing 12000 meter long cable in area bound…2017-02-23
Month of issue in the collected archive
All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.
Nearby notices listed in force · within 120 nm
No other collected notice is currently listed in force within this radius. This does not establish safe conditions.
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-03 00:40Z; source collection times vary.
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.