Surveys

Survey operations are underway in the Sea of Okhotsk, Russia, until 25 October by the vessel Fyodor Kovrov, which requests a one-mile berth.

Sea of Okhotsk · HYDROPAC 2645/26

What this record establishes

Cancelled notice · 2026-09-14 15:15Z

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 2026-09-13 09:11Z. First collected 2026-09-14 20:17Z; last seen in collection 2026-09-30 11:02Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered: Sea of Okhotsk. 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 Sea of Okhotsk →

issued: 2026-09-13 09:11Z
status: Cancelled notice
self-cancels: 2026-10-26 00:01Z
sea: Sea of Okhotsk
position: 58.418, 144.491
vessel: M/V FYODOR KOVROV · 19 messages
source: NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-09-14 20:17Z

Original warning text

SEA OF OKHOTSK.
RUSSIA.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 25 OCT
   BY M/V FYODOR KOVROV IN AREA BOUND BY
   59-04.00N 142-31.30E, 59-04.00N 146-50.00E,
   58-28.16N 146-50.01E, 57-48.55N 145-30.15E,
   57-40.20N 145-14.19E, 57-39.02N 142-34.33E.
   ONE MILE BERTH REQUESTED.
2. CANCEL THIS MSG 260001Z OCT 26.

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 →

Collected reports in this area · survey operations

2 within 180 nm since 2019 · 1 in the last 12 months · 0 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.

Survey operations 01 aug thru 30 sep by M/V aldan in area bound by 58-23-20N 147-39-53E, 58-24-34N…2019-07-28

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 2026-09-30 11:15Z; 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.