Surveys

Survey operation in progress until further notice by M/V ramform hyperion towing 14 six mile long cables in…

Norwegian Sea · HYDROLANT 2006/22

What this record establishes

Archived notice · 2022-09-14 08:16Z

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 109/22 130207Z AUG 22.. Issued 2022-08-13 04:10Z. 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
2022-08-13 04:10Z
status
Archived notice
authority
NAVAREA XIX 109/22 130207Z AUG 22.
NAVAREA
NAVAREA XIX · named as the source of this relay
sea
Norwegian Sea
position
65.590, 7.241
vessel
M/V RAMFORM HYPERION · 32 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 OPERATION IN PROGRESS UNTIL FURTHER
NOTICE BY M/V RAMFORM HYPERION TOWING 14
SIX MILE LONG CABLES IN AREA BOUND BY
66-11.30N 009-03.10E, 64-39.20N 006-42.10E,
64-58.90N 005-26.00E, 66-31.50N 007-45.70E.
EIGHT 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.
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

55 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

55 survey operations listed in force · see all

Record snapshot 2026-10-02 01:58Z; 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.