Surveys

Survey operations 10 aug thru 01 sep by M/V oceanic vega towing cables in area bound by 66-29.40N…

Norwegian Sea · HYDROARC 158/23

What this record establishes

Archived notice · 2023-09-02 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 XIX 104/23 091913Z AUG 23.. Issued 2023-08-09 20:36Z. 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: Norwegian Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.

Current notices and reporting history in the Norwegian Sea →

issued: 2023-08-09 20:36Z
status: Archived notice
self-cancels: 2023-09-02 00:01Z
authority: NAVAREA XIX 104/23 091913Z AUG 23.
NAVAREA: NAVAREA XIX · named as the source of this relay
sea: Norwegian Sea
position: 65.566, 3.841
vessel: M/V OCEANIC VEGA · 63 messages
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

NORWEGIAN SEA.
DNC 20, DNC 21.
1. SURVEY OPERATIONS 10 AUG THRU 01 SEP
   BY M/V OCEANIC VEGA TOWING CABLES
   IN AREA BOUND BY
   66-29.40N 005-44.90E, 66-18.70N 000-50.90E,
   64-39.20N 001-21.70E, 64-49.90N 006-27.10E,
   65-20.90N 007-08.70E.
   EIGHT MILE BERTH REQUESTED.
2. CANCEL THIS MSG 020001Z SEP 23.

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.
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.
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.

All warning terms →

Collected reports in this area · survey operations

56 within 180 nm since 2017 · 2 in the last 12 months · 1 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

Survey operations in progress until further notice by M/V amazon conqueror towing 12 10000 meter long cables…Surveys · 53.9 nm

Worldwide in the collected sources

50 survey operations listed in force · see all

Record snapshot 2026-09-24 23:10Z; 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.