Surveys

Survey operations in progress until further notice by M/V ramform victory towing nine six mile long cables…

Norwegian Sea · HYDROARC 170/23

What this record establishes

Archived notice · 2023-09-04 09:22Z

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 107/23 171717Z AUG 23.. Issued 2023-08-17 17:25Z. 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.

Related notices and cancellation links

Current notices and reporting history in the Norwegian Sea →

issued
2023-08-17 17:25Z
status
Archived notice
authority
NAVAREA XIX 107/23 171717Z AUG 23.
NAVAREA
NAVAREA XIX · named as the source of this relay
sea
Norwegian Sea
position
66.839, 4.816
vessel
M/V RAMFORM VICTORY · 241 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

NORWEGIAN SEA.
DNC 21.
SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER
NOTICE BY M/V RAMFORM VICTORY TOWING NINE
SIX MILE LONG CABLES IN AREA BOUND BY
67-19.30N 006-28.00E, 67-30.20N 006-05.70E,
67-11.00N 004-26.70E, 66-52.80N 004-13.60E,
66-38.00N 003-02.10E, 66-17.00N 003-49.00E,
66-43.00N 006-12.40E, 67-07.20N 005-21.40E.
SEVEN MILE BERTH REQUESTED.

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.
Until further notice
The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
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.

All warning terms →

Collected reports in this area · survey operations

48 within 180 nm since 2017 · 5 in the last 12 months · 1 listed in force now

17
20
25
26

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

J
F
M
A
M
J
J
A
S
O
N
D

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

54 survey operations listed in force · see all

Record snapshot 2026-09-29 16:39Z; 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.