Surveys

Oceanographic operations by M/V thalassa: a. 31 aug and 01 sep along trackline between 47-48N 004-30W and…

Bay of Biscay · HYDROLANT 1632/10

What this record establishes

Archived notice · 2010-09-08 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 329/10 30 AUG 10.. Issued 2010-08-30 18:45Z. 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
Bay of Biscay. 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 Bay of Biscay →

issued
2010-08-30 18:45Z
status
Archived notice
authority
NAVAREA II 329/10 30 AUG 10.
NAVAREA
NAVAREA II · named as the source of this relay
sea
Bay of Biscay
position
46.098, -3.448
vessel
M/V THALASSA · 139 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

BAY OF BISCAY.
1. OCEANOGRAPHIC OPERATIONS BY M/V THALASSA:
   A. 31 AUG AND 01 SEP ALONG TRACKLINE BETWEEN
      47-48N 004-30W AND 46-40N 006-00W.
   B. 02 SEP ALONG TRACKLINE BETWEEN
      46-18N 005-14W AND 47-30N 003-24W.
   C. 03 SEP ALONG TRACKLINE JOINING
      47-00N 002-40W, 45-54N 004-33W,
      45-16N 003-55W, 46-02N 002-05W,
      45-51N 001-47W, 44-45N 002-40W.
   D. 04 AND 05 SEP ALONG TRACKLINE BETWEEN
      44-00N 002-54W AND 44-00N 001-32W.
   E. 06 AND 07 SEP ALONG TRACKLINE BETWEEN
      44-45N 001-40W AND 47-48N 004-30W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 08 SEP.

Reading this warning

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

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

99
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

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 2026-10-01 17:58Z; 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.