Structures

Offshore wind farm construction area established in area bound by 55-04.40N 001-29.00E, 55-06.30N…

North Sea · HYDROLANT 16/23

What this record establishes

Archived notice · 2023-01-09 16:51Z

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) · WZ 4/23 021501Z JAN 23.. Issued 2023-01-02 15:30Z. 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 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 North Sea →

issued
2023-01-02 15:30Z
status
Archived notice
authority
WZ 4/23 021501Z JAN 23.
issued by
WZ
sea
North Sea
position
54.976, 1.673
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

NORTH SEA.
ENGLAND.
DNC 20.
OFFSHORE WIND FARM CONSTRUCTION AREA ESTABLISHED
IN AREA BOUND BY
55-04.40N 001-29.00E, 55-06.30N 001-40.40E,
55-06.30N 001-51.70E, 54-51.10N 001-52.20E,
54-52.00N 001-26.90E.

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.
Offshore wind farm
Construction or maintenance at an offshore wind farm: turbine foundations, jack-up vessels and export cables.
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.

All warning terms →

Collected reports in this area · offshore structure notices

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

98
00
05
10
15
20
23

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

2 offshore structure notices listed in force · see all

Record snapshot 2026-10-01 11:40Z; source collection times vary.

Structures

Platforms, wind turbines and fish farms established, under construction or removed. All current offshore structure notices →

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.