Surveys

Underwater operations in the Black Sea off Romania from 5 January 2025 to 31 December 2026, wide berth requested.

Black Sea · HYDROLANT 2607/24

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 2024-12-30 12:38Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-09-29 22:32Z. 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
2024-12-30 12:38Z
status
Listed in force
self-cancels
2027-01-01 00:01Z
sea
Black Sea
position
43.946, 30.670
nearest port
Tulcea · 109 nm
source
NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-08-17 13:41Z

Original warning text

BLACK SEA.
ROMANIA.
DNC 10.
1. UNDERWATER OPERATIONS 05 JAN 25 THRU 31 DEC 26
   IN AREA BOUND BY
   44-04.40N 030-34.13E, 44-02.40N 030-30.50E,
   43-51.87N 030-41.07E, 43-48.68N 030-44.33E,
   43-50.73N 030-50.38E, 44-02.77N 030-37.85E,
   44-04.67N 030-37.88E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 010001Z JAN 27.

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.
Underwater operations
Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
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

209 within 180 nm since 1999 · 13 in the last 12 months · 6 listed in force now

99
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

54 survey operations listed in force · see all

Record snapshot 2026-09-29 22:34Z; 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.