Survey operations in progress until 10 sep by M/V olympic artemis with two submersibles, M/V harvey deepsea…
Gulf of Mexico · NAVAREA IV 512/23
What this record establishes
Archived notice · 2023-09-11 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) · OLYMPIC ARTEMIS 0/23 091901Z MAY 23.. Issued 2023-05-09 22:17Z. 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
- Gulf of Mexico. 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
Current notices and reporting history in the Gulf of Mexico →
- issued
- 2023-05-09 22:17Z
- status
- Archived notice
- self-cancels
- 2023-09-11 00:01Z
- authority
- OLYMPIC ARTEMIS 0/23 091901Z MAY 23.
- NAVAREA
- NAVAREA IV
- issued by
- OLYMPIC ARTEMIS
- sea
- Gulf of Mexico
- position
- 27.441, -92.578
- vessels
- M/V FULMAR EXPLORER · 3 messagesM/V HARVEY DEEPSEAM/V OLYMPIC ARTEMIS · 7 messagesM/V SANCO SWORD · 17 messagesM/V VICTORY G · 9 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
GULF OF MEXICO. LOUISIANA. 1. SURVEY OPERATIONS IN PROGRESS UNTIL 10 SEP BY M/V OLYMPIC ARTEMIS WITH TWO SUBMERSIBLES, M/V HARVEY DEEPSEA WITH TWO SUBMERSIBLES, M/V SANCO SWORD TOWING 250 METER LONG CABLE, M/V FULMAR EXPLORER TOWING 100 METER LONG CABLE AND M/V VICTORY G IN VICINITY OF AREA BOUND BY 28-03.74N 093-23.81W, 28-03.74N 091-45.52W, 26-49.22N 091-45.52W, 26-49.22N 093-23.81W. WIDE BERTH REQUESTED. 2. CANCEL NAVAREA IV 1269/22. 3. CANCEL THIS MSG 110001Z SEP 23.
Reading this warning
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- Towed array / streamer
- Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
- Tow / towing
- A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
- 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.
- NAVAREA
- One of the 21 ocean areas of the World-Wide Navigational Warning Service, each with a coordinator that broadcasts long-range warnings.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
- 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.
Collected reports in this area · survey operations
60 within 180 nm since 2002 · 3 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 31 dec by M/V island frontier with M/V rem andes and M/V sanco sword…2026-08-22
- Survey operations in progress until 31 dec by M/V island frontier in area bound by 27-54.83N 092-06.05W,…2026-08-06
- Survey operations in progress until 15 sep by M/V island pride, M/V sanco swift and M/V olympic artemis in…2026-06-15
- Survey operations 10 sep thru 31 mar 25 by M/V sanco spirit, M/V rem andes and M/V siem spearfish towing 400…2024-09-03
- Survey operations in progress until 25 jan 25 by M/V chloe candies with submersibles, M/V sanco sword and…2024-07-05
- Survey operations in progress until 30 apr by M/V chloe candies, M/V sanco spirit and M/V artemis athene in…2024-02-21
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
55 survey operations listed in force · see all
Record snapshot 2026-09-27 03:03Z; 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.