Other

Hydrographic operations 28 nov thru 08 dec by M/V sirius in area bound by 28-19S 048-00W, 30-35S 050-15W,…

South Atlantic Ocean · HYDROLANT 2610/02

What this record establishes

Archived notice · 2002-12-09 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 V 1525/02 250400Z NOV 02; PTNM. Issued 2002-11-25 07:50Z. 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 parsed report position is -29.450, -49.125. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the South Atlantic Ocean →

issued
2002-11-25 07:50Z
status
Archived notice
authority
NAVAREA V 1525/02 250400Z NOV 02; PTNM
NAVAREA
NAVAREA V · named as the source of this relay
sea
South Atlantic Ocean
position
-29.450, -49.125
vessel
M/V SIRIUS · 43 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROGRAPHIC OPERATIONS 28 NOV THRU 08 DEC
   BY M/V SIRIUS IN AREA BOUND BY
   28-19S 048-00W, 30-35S 050-15W,
   COASTLINE. WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 2573/02(37).
3. CANCEL THIS MSG 09 DEC.

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 · other warnings

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

99
00
05
10
15
20

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

21 other warnings listed in force · see all

Record snapshot 2026-10-03 07:08Z; source collection times vary.

Other

Everything the classifier did not place elsewhere. All current other warnings →

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.