Cable ops

Seismic survey in progress until further notice by M/V ramform viking in areas bound by: a. 06-06.8S…

South Atlantic Ocean · HYDROLANT 2862/13

What this record establishes

Archived notice · 2013-11-28 22:38Z

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 VII 386/13 121057Z NOV 13.. Issued 2013-11-13 13:10Z. 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
South Atlantic Ocean. 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 South Atlantic Ocean →

issued
2013-11-13 13:10Z
status
Archived notice
authority
NAVAREA VII 386/13 121057Z NOV 13.
NAVAREA
NAVAREA VII · named as the source of this relay
sea
South Atlantic Ocean
position
-6.291, 11.270
vessel
M/V RAMFORM VIKING · 198 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN SOUTH ATLANTIC.
ANGOLA.
1. SEISMIC SURVEY IN PROGRESS UNTIL FURTHER NOTICE
   BY M/V RAMFORM VIKING IN AREAS BOUND BY:
   A. 06-06.8S 011-11.8E, 06-05.6S 011-17.3E,
      06-13.4S 011-19.1E, 06-23.0S 011-21.3E,
      06-24.4S 011-15.2E, 06-20.8S 011-14.4E,
      06-21.1S 011-13.2E, 06-14.1S 011-11.6E,
      06-13.6S 011-13.4E.
   B. 06-24.4S 010-58.7E, 06-24.4S 011-02.3E,
      06-22.7S 011-02.3E, 06-29.7S 011-07.7E,
      06-29.9S 011-07.7E, 06-31.9S 011-06.8E,
      06-31.9S 011-04.2E, 06-33.7S 011-04.2E,
      06-33.7S 011-00.6E, 06-31.9S 010-58.7E.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 1806/13.

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.
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.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROLANT
The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.

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

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

23 cable & pipeline work listed in force · see all

Record snapshot 2026-10-04 05:11Z; 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.