Surveys

Survey operations 01 dec thru 17 feb 23 by M/V ramford titan towing 12 11112 meter long cables, M/V thor…

South Atlantic Ocean · HYDROLANT 3083/22

What this record establishes

Archived notice · 2023-02-16 10:33Z

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) · M/V RAMFORM TITAN 0/22 301230Z NOV 22.. Issued 2022-11-30 12:55Z. 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
2022-11-30 12:55Z
status
Archived notice
self-cancels
2023-02-18 00:01Z
authority
M/V RAMFORM TITAN 0/22 301230Z NOV 22.
issued by
M/V RAMFORM TITAN
sea
South Atlantic Ocean
position
-28.501, 13.247
vessels
M/V RAMFORD TITANM/V THOR MAGNI · 18 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN SOUTH ATLANTIC.
DNC 01.
1. SURVEY OPERATIONS 01 DEC THRU 17 FEB 23
   BY M/V RAMFORD TITAN TOWING 12 11112 METER LONG
   CABLES, M/V THOR MAGNI AND M/V 7 STARS IN AREA
   BOUND BY
   27-45.85S 012-45.03E, 29-13.25S 012-43.16E,
   29-14.06S 013-45.03E, 27-46.61S 013-46.15E.
   SEVEN MILE BERTH REQUESTED.
2. CANCEL THIS MSG 180001Z FEB 23.

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.
Survey operations
A research or survey vessel is mapping the seabed or water column, often while towing equipment.
Towed array / streamer
Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
Tow / towing
A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
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.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.
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.

All warning terms →

Collected reports in this area · survey operations

267 within 180 nm since 2003 · 0 in the last 12 months · 0 listed in force now

03
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

55 survey operations listed in force · see all

Record snapshot 2026-10-02 05:12Z; 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.