Survey operations in progress until 22 sep by M/V sarmiento de gamboa in area bound by 40-28N 013-30W,…
North Atlantic Ocean · HYDROLANT 2718/18
What this record establishes
Archived notice · 2018-08-31 07:13Z
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 338/18 261313Z AUG 18.. Issued 2018-08-26 13:22Z. 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 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
- Cancel HYDROLANT 2718/18 and this msglater cancellation notice
Current notices and reporting history in the North Atlantic Ocean →
- issued
- 2018-08-26 13:22Z
- status
- Archived notice
- authority
- NAVAREA II 338/18 261313Z AUG 18.
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- North Atlantic Ocean
- position
- 36.628, -11.389
- 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. MOROCCO. PORTUGAL. DNC 08. 1. SURVEY OPERATIONS IN PROGRESS UNTIL 22 SEP BY M/V SARMIENTO DE GAMBOA IN AREA BOUND BY 40-28N 013-30W, 40-06N 009-37W, 33-19N 008-35W, 33-19N 013-48W. ONE MILE BERTH REQUESTED. 2. CANCEL THIS MSG 23 SEP 18.
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.
- 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.
- 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
49 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.
- Underwater operations in progress until further notice by M/V joides resolution in 37-57.60N 009-31.00W2022-11-30
- Underwater operations in progress until further notice by M/V joides resolution in 37-34.00N 010-07.70W2022-11-16
- Underwater operations in progress until further notice by M/V joides resolution in 37-34.90N 010-21.50W2022-11-01
- Survey operations 30 oct thru 26 nov by M/V meteor in area bound by 36-32.00N 006-25.00W, 36-37.00N…2022-10-27
- Underwater operations in progress until 011800Z nov by M/V joides resolution in area within 02.00 miles of…2022-10-17
- Survey operations 120001Z to 200001Z sep by M/V sarmiento de gamboa along trackline joining 37-15.50N…2022-09-09
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 07:07Z; 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.