Surveys

Survey operations are underway by vessel Ramform Victory towing 12 cables three miles long in the South Atlantic off Angola; a five-mile berth is requested.

South Atlantic Ocean · HYDROLANT 1294/26

What this record establishes

Cancelled notice · 2026-08-24 20:04Z

A later message explicitly cancels this notice. Cancellation ends the notice; the later message must be checked for any statement about recovery or continuing danger.

Source and dates
NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-07-03 10:47Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-08-28 19:17Z. 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
2026-07-03 10:47Z
status
Cancelled notice
sea
South Atlantic Ocean
position
-6.273, 11.129
vessel
M/V RAMFORM VICTORY · 241 messages
nearest port
Soyo · 72 nm
source
NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-08-17 13:41Z

Original warning text

SOUTH ATLANTIC.
ANGOLA.
1. SURVEY OPERATIONS IN PROGRESS UNTIL
   FURTHER NOTICE BY M/V RAMFORM VICTORY
   TOWING 12 THREE MILE LONG CABLES
   IN AREA BOUND BY
   06-39.50S 010-47.50E, 06-39.50S 011-27.00E,
   05-54.00S 011-30.00E, 05-54.00S 010-46.50E.
   FIVE MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 1288/26.

Reading this warning

Survey operations
A research or survey vessel is mapping the seabed or water column, often while towing equipment.
Until further notice
The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
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.
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.

All warning terms →

Collected reports in this area · survey operations

74 within 180 nm since 2003 · 2 in the last 12 months · 0 listed in force now

03
05
10
15
20
25
26

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 2026-09-28 10:30Z; 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.