Surveys

Oceanographic operations 060001Z dec to 242359Z jan 16 by M/V discovery along trackline joining 24-30.37N…

North Atlantic Ocean · HYDROLANT 3014/15

What this record establishes

Archived notice · 2016-01-25 00:59Z

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 II 436/15 041632Z DEC 15.. Issued 2015-12-04 19:26Z. 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: North Atlantic Ocean. 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 North Atlantic Ocean →

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2015-12-06 00:01Z	2016-01-24 23:59Z	—	1199 h 58

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued: 2015-12-04 19:26Z
status: Archived notice
self-cancels: 2016-01-25 00:59Z
authority: NAVAREA II 436/15 041632Z DEC 15.
NAVAREA: NAVAREA II · named as the source of this relay
sea: North Atlantic Ocean
position: 25.321, -24.080
vessel: M/V DISCOVERY · 52 messages
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN NORTH ATLANTIC.
DNC 01.
1. OCEANOGRAPHIC OPERATIONS 060001Z DEC TO 242359Z JAN 16
   BY M/V DISCOVERY ALONG TRACKLINE JOINING
   24-30.37N 035-05.10W,
   24-29.65N 023-30.05W,
   27-55.65N 013-22.14W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 250059Z JAN 16.

Reading this warning

DNC (Digital Nautical Chart): A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
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.
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

9 within 180 nm since 2001 · 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

55 survey operations listed in force · see all

Record snapshot 2026-10-02 07:06Z; 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.