Oceanographic operations 070001Z to 242000Z may by M/V alliance in area bound by 37-00N 014-00E, 36-45N…
Mediterranean Sea - Eastern Basin · HYDROLANT 758/04
What this record establishes
Archived notice · 2004-05-24 21:00Z
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) · MARISICILIA 150/04 041000Z MAY 04; MARISICILIA 147/04 031547Z MAY 04; NAVAREA III 227/04 040750Z MAY 04. Issued 2004-05-04 10:40Z. 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
- Mediterranean Sea - Eastern Basin. 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
- Cable operations in progress until further notice by cableship ile de batz in area bound by 36-16.6N…cancelled by this notice
- Derelict vessel adrift in 37-22N 008-05E on 28 aprcancelled by this notice
Current notices and reporting history in the Mediterranean Sea - Eastern Basin →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2004-05-07 00:01Z | 2004-05-24 20:00Z | — | 427 h 59 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2004-05-04 10:40Z
- status
- Archived notice
- self-cancels
- 2004-05-24 21:00Z
- authority
- MARISICILIA 150/04 041000Z MAY 04; MARISICILIA 147/04 031547Z MAY 04; NAVAREA III 227/04 040750Z MAY 04
- NAVAREA
- NAVAREA III · named as the source of this relay
- issued by
- MARISICILIA
- sea
- Mediterranean Sea - Eastern Basin
- position
- 36.433, 14.712
- vessel
- M/V ALLIANCE · 61 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. OCEANOGRAPHIC OPERATIONS 070001Z TO 242000Z MAY BY M/V ALLIANCE IN AREA BOUND BY 37-00N 014-00E, 36-45N 014-30E, 36-37N 015-00E, 36-40N 015-15E, 36-55N 015-20E, 35-55N 015-20E, 35-55N 015-00E, 36-18N 014-30E, 36-20N 014-00E. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 699/04, OPERATIONS COMPLETED. 3. CANCEL HYDROLANT 722/04(52). 4. CANCEL THIS MSG 242100Z MAY.
Reading this warning
- 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
291 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.
- Underwater operations by M/V handin tide with submersible: a. 01 thru 05 jun in area within ten miles of…2022-05-27
- Survey operations 10 apr thru 10 may by M/V dalla porta in: a. 37-23.06N 011-35.59E2022-04-08
- Survey operations 13 thru 21 feb by M/V havila phoenix with submersible along trackline joining 35-56.56N…2022-02-11
- Survey operations in progress until 12 mar 22 by M/V artabro in area bound by 36-46.3N 011-01.8E, 37-01.5N…2021-10-30
- Survey operations in progress until 12 mar 22 by M/V viccica in area bound by 36-48.5N 011-02.9E, 36-46.8N…2021-10-30
- Survey operations in progress until 01 nov by M/V artabro in area bound by 36-47.4N 011-04.3E, 37-14.2N…2021-10-25
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
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-03 03:49Z; 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.