Surveys

Survey operations 22 aug thru 30 sep by M/V barbaros hayreddin pasa, M/V TANUX-1 and M/V vivre-g in area…

Black Sea · HYDROLANT 1865/23

What this record establishes

Archived notice · 2023-10-01 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) · TURKEY 71/23 210901Z AUG 23.. Issued 2023-08-21 10:07Z. 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
Black Sea. 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 Black Sea →

issued
2023-08-21 10:07Z
status
Archived notice
self-cancels
2023-10-01 00:01Z
authority
TURKEY 71/23 210901Z AUG 23.
issued by
TURKEY
sea
Black Sea
position
41.570, 37.854
vessels
M/V BARBAROS HAYREDDIN PASA · 55 messagesM/V TANUX-1 · 24 messagesM/V VIVRE-G
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

BLACK SEA.
TURKEY.
DNC 10.
1. SURVEY OPERATIONS 22 AUG THRU 30 SEP BY
   M/V BARBAROS HAYREDDIN PASA, M/V TANUX-1
   AND M/V VIVRE-G IN AREA BOUND BY
   42-17.41N 037-24.89E, 41-36.34N 036-50.76E,
   40-57.72N 038-17.07E, 40-56.28N 038-20.98E,
   40-55.86N 038-23.66E, 40-55.57N 038-26.65E,
   40-55.56N 038-29.39E, 40-55.68N 038-31.32E,
   40-56.89N 038-34.12E, 40-58.44N 038-36.75E,
   41-20.70N 038-54.86E, 41-44.36N 038-02.92E,
   41-56.79N 038-13.19E.
   FIVE MILE BERTH REQUESTED.
2. CANCEL THIS MSG 010001Z OCT 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.
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

35 within 180 nm since 2000 · 1 in the last 12 months · 1 listed in force now

00
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

55 survey operations listed in force · see all

Record snapshot 2026-09-25 20:53Z; 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.