Cable ops

Survey operations by cableship Nautilus are in progress near Angola until 22 August; wide berth requested.

South Atlantic Ocean · HYDROLANT 1497/26

What this record establishes

Cancelled notice · 2026-08-28 19:00Z

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 in-force warnings (DailyMem*.txt). Issued 2026-08-04 10:26Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-08-24 19:47Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered: South Atlantic Ocean. The parsed report position is -6.355, 11.110. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Current notices and reporting history in the South Atlantic Ocean →

issued: 2026-08-04 10:26Z
status: Cancelled notice
self-cancels: 2026-08-23 00:01Z
sea: South Atlantic Ocean
position: -6.355, 11.110
nearest port: Soyo · 74 nm
source: NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-08-17 13:41Z

Original warning text

SOUTH ATLANTIC.
ANGOLA.
1. SURVEY OPERATIONS IN PROGRESS
   UNTIL 22 AUG BY CABLESHIP NAUTILUS
   IN:
   A. 06-16.56S 011-14.56E.
   B. 06-28.99S 011-01.04E.
   C. 06-18.69S 011-05.44E.
   D. 06-28.14S 011-09.26E.
   E. 06-20.63S 011-09.34E.
   F. 06-22.58S 011-00.52E.
   G. 06-27.33S 011-05.36E.
   H. 06-22.56S 011-00.57E.
   I. 06-21.26S 011-16.74E.
   J. 06-11.13S 011-05.44E.
   K. 06-16.40S 011-04.25E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 230001Z AUG 26.

Reading this warning

Survey operations: A research or survey vessel is mapping the seabed or water column, often while towing equipment.
Cable operations: A ship is laying, burying or repairing a submarine cable, usually along a stated route.
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.
CANCEL THIS MSG: The warning's own expiry: a line telling the reader when the message cancels itself.
Date-time group (DTG): A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.

All warning terms →

Collected reports in this area · cable & pipeline work

89 within 180 nm since 1999 · 4 in the last 12 months · 2 listed in force now

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

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

NAVAREA VII 246 of 2026 (24 aug 26) 1. south atlantic ocean - ne sector - offshore orange river mouth 2.…Cable ops · 4.1 nm
Operation on cableOther · 49.9 nm

Worldwide in the collected sources

23 cable & pipeline work listed in force · see all

Record snapshot 2026-09-28 02:25Z; 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.