Survey operations in progress until 130359Z mar by M/V knorr in area bound by 04-00N 043-00W, 02-00S…
South Atlantic Ocean · HYDROLANT 390/10
What this record establishes
Archived notice · 2010-03-13 04:59Z
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 I 378/10 030845Z MAR 10.. Issued 2010-03-03 11:34Z. 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.
Related notices and cancellation links
- Containers adrift in area between saint lucia (13-54N 061-07W) and guadeloupe (16-07N 061-48W)cancelled by this notice
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2010-03-03 11:34Z
- status
- Archived notice
- self-cancels
- 2010-03-13 04:59Z
- authority
- NAVAREA V I 378/10 030845Z MAR 10.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V I
- sea
- South Atlantic Ocean
- position
- -0.667, -45.917
- vessel
- M/V KNORR
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BRAZIL-NORTH COAST. 1. SURVEY OPERATIONS IN PROGRESS UNTIL 130359Z MAR BY M/V KNORR IN AREA BOUND BY 04-00N 043-00W, 02-00S 043-00W, 04-00S 050-00W, 02-00S 050-00W. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 381/10(25). 3. CANCEL THIS MSG 130459Z MAR.
Reading this warning
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- 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.
- Wide berth requested
- Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROLANT
- The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
- 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
21 within 180 nm since 2001 · 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 14 oct by M/V ramform atlas, M/V drs retumbante, M/V thor frigg and tug…2024-10-01
- Survey operations 13 jun thru 03 jul by M/V marion dufresne along trackline joining 06-39.38N 052-04.99W,…2023-06-09
- Survey operations 13 jun thru 03 jul by M/V marion dufresne along trackline joining 06-39.38N 052-04.99W,…2023-06-09
- Survey operations in progress until 260300Z jan 24 by M/V c-warrior and M/V c-viking in area within ten…2023-05-25
- Survey operations in progress until 291000Z apr by M/V nho g sampaio and M/V nhib ten castelo in area bound…2023-04-17
- Survey operations in progress until 291000Z apr by M/V nho g sampaio and M/V nhib ten castelo in area bound…2023-04-17
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 05:59Z; 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.