Cable ops

Cable operations are in progress by cableship Ile de Sein along a trackline in the Gulf of Guinea, Nigeria; wide berth requested.

Gulf of Guinea · HYDROLANT 950/24

What this record establishes

Cancelled notice · 2026-08-14 18:10Z

This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.

Source and dates
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · NAVAREA II 124/24 041219Z MAY 24.. Issued 2024-05-04 12:29Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-08-17 15:50Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
Gulf of Guinea. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.

Current notices and reporting history in the Gulf of Guinea →

issued
2024-05-04 12:29Z
status
Cancelled notice
authority
NAVAREA II 124/24 041219Z MAY 24.
NAVAREA
NAVAREA II · named as the source of this relay
sea
Gulf of Guinea
position
3.809, 7.463
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:41Z

Original warning text

GULF OF GUINEA.
NIGERIA.
DNC 01.
CABLE OPERATIONS IN PROGRESS UNTIL FURTHER
NOTICE BY CABLESHIP ILE DE SEIN
ALONG TRACKLINE JOINING
03-00.70N 006-57.40E, 03-35.20N 007-13.90E,
03-48.50N 007-33.10E, 04-02.40N 007-39.00E,
04-14.90N 007-40.70E, 04-18.60N 007-44.20E,
04-27.20N 007-59.50E, 04-32.40N 008-00.50E.
WIDE 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.
Cable operations
A ship is laying, burying or repairing a submarine cable, usually along a stated route.
Until further notice
The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
Track line joining
Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
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

50 within 180 nm since 2000 · 0 in the last 12 months · 0 listed in force now

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

Worldwide in the collected sources

24 cable & pipeline work listed in force · see all

Record snapshot 2026-10-01 23:18Z; 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.