Survey operations 280001Z may to 090001Z jun by M/V sarmiento de gamboa along trackline joining 41-51.9N…
North Atlantic Ocean · HYDROLANT 1426/21
What this record establishes
Archived notice · 2021-06-02 15:48Z
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 II 208/21 272047Z MAY 21.. Issued 2021-05-27 21:16Z. 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
- North Atlantic Ocean. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
Related notices and cancellation links
Current notices and reporting history in the North Atlantic Ocean →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2021-05-28 00:01Z | 2021-06-09 00:01Z | — | 288 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2021-05-27 21:16Z
- status
- Archived notice
- self-cancels
- 2021-06-09 01:00Z
- authority
- NAVAREA II 208/21 272047Z MAY 21.
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- North Atlantic Ocean
- position
- 43.308, -15.077
- vessel
- M/V SARMIENTO DE GAMBOA · 67 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH ATLANTIC. PORTUGAL. DNC 08, DNC 19. 1. SURVEY OPERATIONS 280001Z MAY TO 090001Z JUN BY M/V SARMIENTO DE GAMBOA ALONG TRACKLINE JOINING 41-51.9N 009-33.4W, 40-20.0N 009-27.6W, 40-20.0N 012-13.4W, 40-47.3N 013-06.1W, 48-24.8N 021-08.3W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 090100Z JUN 21.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- 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.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- 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.
- 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
35 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 130001Z to 221200Z oct by M/V sarmiento de gamboa in area bound by 42-45.00N 010-45.00W,…2023-10-12
- Survey operations in progress until 14 jul by M/V ramon margalef along trackline joining 43-00.00N…2023-07-04
- Survey operations 080001Z to 110600Z jul by M/V sarmiento de gamboa towing 6000 meter long cable along…2022-07-05
- Survey operations in progress until 230005Z aug by M/V ramon margalef in area bound by 43-00.00N 015-23.80W,…2021-08-21
- Survey operations in progress until 230005Z aug by M/V ramon margalef along trackline joining 43-00.00N…2021-08-16
- Survey operations in progress until 102359Z jun by M/V sarmiento de gamboa in vicinity of trackline joining…2021-06-04
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
55 survey operations listed in force · see all
Record snapshot 2026-10-02 05:48Z; 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.