Surveys

Survey operations 01 may thru 15 jun by M/V le suroit along trackline joining 00-00N 010-00W, 06-00S…

South Atlantic Ocean · HYDROLANT 719/11

What this record establishes

Archived notice · 2011-06-16 00:01Z

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 II 112/11 272000Z APR 11.. Issued 2011-04-27 21:40Z. 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 the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.

Current notices and reporting history in the South Atlantic Ocean →

issued: 2011-04-27 21:40Z
status: Archived notice
authority: NAVAREA II 112/11 272000Z APR 11.
NAVAREA: NAVAREA II · named as the source of this relay
sea: South Atlantic Ocean
position: -1.736, -9.867
vessel: M/V LE SUROIT · 66 messages
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

GULF OF GUINEA.
1. SURVEY OPERATIONS 01 MAY THRU 15 JUN
   BY M/V LE SUROIT ALONG TRACKLINE JOINING
   00-00N 010-00W, 06-00S 010-00W,
   10-00S 010-00W, 00-00N 000-00W,
   00-00N 023-00W, 00-45S 010-00W,
   00-45N 010-00W, 00-45S 000-00W,
   00-00N 000-00W. WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 16 JUN.

Reading this warning

Survey operations: A research or survey vessel is mapping the seabed or water column, often while towing equipment.
Track line joining: Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
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

5 within 180 nm since 2011 · 0 in the last 12 months · 0 listed in force now

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

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

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

56 survey operations listed in force · see all

Record snapshot 2026-10-02 23:30Z; 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.