Surveys

Underwater operations 160700Z to 161500Z sep by tug mar de espanha, M/V macau, M/V grauna and M/V nb…

South Atlantic Ocean · HYDROLANT 2810/19

What this record establishes

Archived notice · 2019-09-16 16:00Z

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 COASTAL E 949/19 150038Z SEP 19.. Issued 2019-09-15 00:50Z. 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 -8.804, -35.050 with a 3.0 nm radius. 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 →

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
2019-09-16 07:00Z2019-09-16 15:00Z—8 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued
2019-09-15 00:50Z
status
Archived notice
self-cancels
2019-09-16 16:00Z
authority
NAVAREA V COASTAL E 949/19 150038Z SEP 19.
NAVAREA
NAVAREA V · named as the source of this relay
issued by
NAVAREA V COASTAL E
sea
South Atlantic Ocean
position
-8.804, -35.050 · r 3.0 nm
vessels
M/V GRAUNAM/V MACAUTUG MAR DE ESPANHAM/V NB COMANDANTE MANHAES
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-NORTHEAST COAST.
DNC 01.
1. UNDERWATER OPERATIONS 160700Z TO 161500Z SEP
   BY TUG MAR DE ESPANHA, M/V MACAU, M/V GRAUNA
   AND M/V NB COMANDANTE MANHAES IN AREA WITHIN
   THREE MILES OF 08-48.23S 035-03.01W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 161600Z SEP 19.

Reading this warning

DNC (Digital Nautical Chart)
A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
Underwater operations
Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
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.
Tow / towing
A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
Within a radius of
A circular area — every position within a stated distance of a point.
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.

All warning terms →

Collected reports in this area · survey operations

41 within 180 nm since 2000 · 0 in the last 12 months · 0 listed in force now

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

Worldwide in the collected sources

54 survey operations listed in force · see all

Record snapshot 2026-09-29 20:56Z; 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.