Surveys

Underwater operations in progress until 26 oct by M/V northern explorer along trackline joining 43-25.6N…

Adriatic Sea · HYDROLANT 2658/13

What this record establishes

Archived notice · 2013-10-27 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 508/13 240636Z OCT 13.. Issued 2013-10-24 07:48Z. 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.

Current notices and reporting history in the Adriatic Sea →

issued: 2013-10-24 07:48Z
status: Archived notice
authority: NAVAREA III 508/13 240636Z OCT 13.
NAVAREA: NAVAREA III · named as the source of this relay
sea: Adriatic Sea
position: 43.711, 14.748
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 IN PROGRESS UNTIL
   26 OCT BY M/V NORTHERN EXPLORER
   ALONG TRACKLINE JOINING
   43-25.6N 014-34.6E, 43-49.2N 015-04.8E,
   43-30.7N 014-31.2E, 43-52.9N 015-00.3E,
   43-34.8N 014-27.5E, 43-56.8N 014-55.5E,
   43-38.8N 014-24.3E.
   FOUR MILE BERTH REQUESTED.
2. CANCEL THIS MSG 27 OCT 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.

All warning terms →

Collected reports in this area · survey operations

68 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.

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 03:11Z; 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.