Survey operations in progress until 270800Z sep by M/V hesperides within 21 miles of 36-11N 003-40W
Alboran Sea · HYDROLANT 1782/09
What this record establishes
Archived notice · 2009-09-27 09:00Z
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 III 355/09 181045Z SEP 09.. Issued 2009-09-18 14:12Z. 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
- Alboran Sea. The parsed report position is 36.183, -3.667 with a 21.0 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
- issued
- 2009-09-18 14:12Z
- status
- Archived notice
- self-cancels
- 2009-09-27 09:00Z
- authority
- NAVAREA III 355/09 181045Z SEP 09.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Alboran Sea
- position
- 36.183, -3.667 · r 21.0 nm
- vessel
- M/V HESPERIDES · 31 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. SURVEY OPERATIONS IN PROGRESS UNTIL 270800Z SEP BY M/V HESPERIDES WITHIN 21 MILES OF 36-11N 003-40W. 2. CANCEL THIS MSG 270900Z SEP.
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.
- Within a radius of
- A circular area — every position within a stated distance of a point.
- 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
80 within 180 nm since 1999 · 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 06 nov thru 17 by M/V ramon margalef in area bounded by: 36-00.00N 006-00.00W, 36-00.00N…2023-11-06
- Survey operations 06 nov thru 17 by M/V ramon margalef in area bounded by: 36-00.0N 006-00.0W, 36-00.0N…2023-11-03
- Survey operations in progress until 192300Z mar by M/V ramon margalef in area bound by: 35-48.0N 007-34.0W,…2023-03-14
- Survey operations in progress until further notice by M/V dar al beida in area bound by 36-00.00N…2023-02-20
- Survey operations in progress until further notice by M/V dar al beida in area bound by 36-10.00N…2023-02-20
- Underwater operations by M/V janus II 170001Z oct thru 010001 nov in area bound by: 35-09.0N 006-41.0W,…2022-10-21
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 23:46Z; 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.