Cable ops

Seismic survey by M/V discoverer: a. 05 may in area bound by 27-30S 045-45W, 27-25S 045-45W, 26-25S 045-05W,…

South Atlantic Ocean · HYDROLANT 833/09

What this record establishes

Archived notice · 2009-05-07 00:01Z

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 V S 910/09 051302Z MAY 09.. Issued 2009-05-05 13:41Z. 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
2009-05-05 13:41Z
status
Archived notice
authority
NAVAREA V S 910/09 051302Z MAY 09.
NAVAREA
NAVAREA V · named as the source of this relay
issued by
NAVAREA V S
sea
South Atlantic Ocean
position
-26.421, -45.063
vessel
M/V DISCOVERER · 228 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. SEISMIC SURVEY BY M/V DISCOVERER:
   A. 05 MAY IN AREA BOUND BY
      27-30S 045-45W, 27-25S 045-45W,
      26-25S 045-05W, 26-25S 044-55W.
   B. 06 MAY IN AREA BOUND BY
      26-25S 045-05W, 26-25S 044-55W,
      25-20S 044-30W, 25-15S 044-30W.
   FIVE MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 785/09(55).
3. CANCEL THIS MSG 07 MAY.

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.
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.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · cable & pipeline work

1502 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
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

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

23 cable & pipeline work listed in force · see all

Record snapshot 2026-10-03 02:36Z; 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.