Cable ops

Seismic survey in progress until further notice by M/V northern explorer towing 4.5 mile long cable in areas…

Celtic Sea · HYDROLANT 1890/05

What this record establishes

Archived notice · 2005-11-28 18:01Z

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 I 413/05 171733Z OCT 05.. Issued 2005-10-16 17:55Z. 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
Celtic 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 Celtic Sea →

issued
2005-10-16 17:55Z
status
Archived notice
authority
NAVAREA I 413/05 171733Z OCT 05.
NAVAREA
NAVAREA I · named as the source of this relay
sea
Celtic Sea
position
51.233, -7.936
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

SEISMIC SURVEY IN PROGRESS UNTIL FURTHER
NOTICE BY M/V NORTHERN EXPLORER TOWING
4.5 MILE LONG CABLE IN AREAS BOUND BY:
A. 50-35N 008-31W, 51-23N 009-01W,
   51-50N 007-25W, 51-05N 006-50W.
B. 51-35N 006-20W, 52-00N 006-47W,
   52-12N 006-16W, 52-33N 005-50W,
   52-39N 004-59W, 52-33N 004-51W,
   52-14N 005-07W.
WIDE BERTH REQUESTED.

Reading this warning

Seismic survey
A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
Until further notice
The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
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 · cable & pipeline work

580 within 180 nm since 1998 · 0 in the last 12 months · 0 listed in force now

98
00
05
10
15
20
24

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

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

23 cable & pipeline work listed in force · see all

Record snapshot 2026-10-04 00:00Z; source collection times vary.

Cable ops

Cable laying, pipeline and seismic operations. All current cable & pipeline work →

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.