Underwater operations 24 and 25 sep by M/V northern explorer along trackline between 42-35.9N 017-48.4E and…
Adriatic Sea · HYDROLANT 2354/13
What this record establishes
Archived notice · 2013-09-26 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) · NAVAREA III 440/13 231205Z SEP 13.. Issued 2013-09-23 12:50Z. 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
- Adriatic Sea. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
- issued
- 2013-09-23 12:50Z
- status
- Archived notice
- authority
- NAVAREA III 440/13 231205Z SEP 13.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Adriatic Sea
- position
- 42.326, 17.445
- vessel
- M/V NORTHERN EXPLORER · 69 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
ADRIATIC SEA. CROATIA. 1. UNDERWATER OPERATIONS 24 AND 25 SEP BY M/V NORTHERN EXPLORER ALONG TRACKLINE BETWEEN 42-35.9N 017-48.4E AND 42-03.2N 017-05.0E. FOUR MILE BERTH REQUESTED. 2. CANCEL THIS MSG 26 SEP 13.
Reading this warning
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- 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
67 within 180 nm since 1997 · 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 28 aug thru 03 sep by M/V janus II in area bound by 40-58.27N 018-47.52E, 40-48.67N…2023-08-27
- Underwater operations 28 aug thru 03 sep in area bound by 40-58.27N 018-47.52E, 40-48.67N 018-24.72E,…2023-08-25
- Underwater operations in progress until 07 jan by M/V edda flora with submersible along trackline joining…2022-01-04
- Underwater operations 22 thru 31 dec by M/V edda flora with submersible along trackline joining 40-19.0N…2021-12-21
- Survey operations 07 nov thru 31 dec by M/V polar empress towing one five mile long cable in area bound by…2018-11-02
- Underwater operations in progress until 202359Z dec by M/V northern explorer in area bound by 44-40.5N…2013-12-16
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
50 survey operations listed in force · see all
Record snapshot 2026-09-24 22:48Z; 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.