Surveys

Survey operations occur in the Black Sea, Turkey, from 26 September through 03 July 2027, with three vessels requesting a five-mile berth.

Black Sea · HYDROLANT 1898/26

What this record establishes

Listed in force

The latest collected record lists this warning as active. This is the status of the notice, not a live observation of conditions at the location.

Source and dates: NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-09-25 09:02Z. First collected 2026-09-25 18:17Z; last seen in collection 2026-09-25 20:32Z. 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.

Current notices and reporting history in the Black Sea →

issued: 2026-09-25 09:02Z
status: Listed in force
self-cancels: 2027-07-04 00:01Z
sea: Black Sea
position: 41.630, 39.645
nearest port: Trabzon · 38 nm
source: NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-09-25 18:17Z

Original warning text

BLACK SEA.
TURKEY.
1. SURVEY OPERATIONS 26 SEP THRU 03 JUL 27
   BY M/V KARADENIZ ARASTIRMA,
   M/V BARBAROS HAYREDDIN PASA AND
   M/V TANUX-1 IN AREA BOUND BY
   41-15.08N 038-42.67E, 41-07.28N 039-23.52E,
   41-08.63N 039-52.77E, 41-59.25N 040-33.63E,
   42-01.37N 040-27.28E, 42-11.65N 039-30.50E.
   FIVE MILE BERTH REQUESTED.
2. CANCEL THIS MSG 040001Z JUL 27.

Reading this warning

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 →

Conditions at the position · now

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MET Norway · NOAA WaveWatch III · HYCOM · GEBCO 2020 · model data at the centroid, not an observation

Collected reports in this area · survey operations

26 within 180 nm since 2000 · 1 in the last 12 months · 1 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

55 survey operations listed in force · see all

Record snapshot 2026-09-25 20:36Z; 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.