Surveys

Oceanographic operations in progress until 16 mar by M/V ara puerto deseado in area bound by 57-44.15S…

South Atlantic Ocean · HYDROLANT 461/12

What this record establishes

Archived notice · 2012-03-17 00:00Z

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) · NAVAREA VI 27/12 010246Z MAR 12.. Issued 2012-03-01 04:10Z. 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
2012-03-01 04:10Z
status
Archived notice
authority
NAVAREA VI 27/12 010246Z MAR 12.
NAVAREA
NAVAREA VI · named as the source of this relay
sea
South Atlantic Ocean
position
-59.585, -46.617
vessel
M/V ARA PUERTO DESEADO · 20 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

SOUTH ATLANTIC.
SCOTIA SEA.
1. OCEANOGRAPHIC OPERATIONS IN PROGRESS UNTIL
   16 MAR BY M/V ARA PUERTO DESEADO
   IN AREA BOUND BY
   57-44.15S 045-42.20W, 59-10.00S 053-39.70W,
   60-55.80S 047-28.80W, 60-58.12S 039-59.70W.
   ONE MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 447/12.
3. CANCEL THIS MSG 17 MAR.

Reading this warning

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 · survey operations

28 within 180 nm since 2012 · 0 in the last 12 months · 0 listed in force now

12
15
19

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

56 survey operations listed in force · see all

Record snapshot 2026-10-02 00:26Z; source collection times vary.

Surveys

Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →

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.