Surveys

Underwater operations in progress until 25 oct by M/V denar echo, M/V denar pathfinder and M/V harvest chief…

Mediterranean Sea - Eastern Basin · HYDROLANT 1952/26

What this record establishes

Cancelled notice · 2026-10-01 16:15Z

This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.

Source and dates
NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-10-01 07:57Z. First collected 2026-10-01 19:02Z; last seen in collection 2026-10-01 19:32Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
Mediterranean Sea - Eastern Basin. 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 Mediterranean Sea - Eastern Basin →

issued
2026-10-01 07:57Z
status
Cancelled notice
self-cancels
2026-10-26 00:01Z
sea
Mediterranean Sea - Eastern Basin
position
35.784, 33.058
source
NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-10-01 19:02Z

Original warning text

EASTERN MEDITERRANEAN SEA.
TURKEY.
1. UNDERWATER OPERATIONS IN PROGRESS
   UNTIL 25 OCT BY M/V DENAR ECHO,
   M/V DENAR PATHFINDER AND M/V HARVEST CHIEF
   IN AREA BOUND BY
   36-01.65N 032-45.72E, 36-00.97N 032-48.22E,
   36-04.41N 032-52.90E, 36-05.97N 032-57.70E,
   35-49.44N 033-07.64E, 35-48.34N 033-04.13E,
   35-29.77N 033-20.96E, 35-20.39N 033-30.58E,
   35-19.87N 033-23.33E, 35-27.98N 033-17.81E,
   35-47.12N 033-00.26E, 35-45.04N 032-53.67E.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 1943/26.
3. CANCEL THIS MSG 260001Z OCT 26.

Reading this warning

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.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROLANT
The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
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

176 within 180 nm since 2001 · 3 in the last 12 months · 1 listed in force now

01
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

56 survey operations listed in force · see all

Record snapshot 2026-10-01 19:37Z; 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.