Cable ops

Pipeline operations in progress by M/V castorone along trackline joining 20-21.40S 116-42.50E, 20-19.60S…

Indian Ocean · HYDROPAC 3990/23

What this record establishes

Archived notice · 2023-12-29 02:00Z

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) · AUSCOAST 291/23 221412Z DEC 23.. Issued 2023-12-22 15:26Z. 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
Indian Ocean. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Indian Ocean →

issued
2023-12-22 15:26Z
status
Archived notice
authority
AUSCOAST 291/23 221412Z DEC 23.
issued by
AUSCOAST
sea
Indian Ocean
position
-20.331, 116.708
vessel
M/V CASTORONE · 14 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN INDIAN OCEAN.
AUSTRALIA.
DNC 04.
PIPELINE OPERATIONS IN PROGRESS BY M/V CASTORONE
ALONG TRACKLINE JOINING 20-21.40S 116-42.50E,
20-19.60S 116-43.80E, 20-19.30S 116-40.30E.
ONE 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.
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

61 within 180 nm since 1999 · 2 in the last 12 months · 1 listed in force now

99
00
05
10
15
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

24 cable & pipeline work listed in force · see all

Record snapshot 2026-10-01 16:45Z; 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.