Surveys

Anchoring, flat fishing, dredging, and navigating with paid out anchor chain is prohibited until further…

Japan Sea · HYDROPAC 1944/05

What this record establishes

Archived notice · 2006-01-18 15:08Z

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) · VLADIVOSTOK 242/05 NOV 05.. Issued 2005-11-21 01:50Z. 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
Japan 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 Japan Sea →

issued
2005-11-21 01:50Z
status
Archived notice
authority
VLADIVOSTOK 242/05 NOV 05.
issued by
VLADIVOSTOK
sea
Japan Sea
position
51.473, 140.860
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

ANCHORING, FLAT FISHING, DREDGING,
AND NAVIGATING WITH PAID OUT ANCHOR CHAIN IS
PROHIBITED UNTIL FURTHER NOTICE IN AREA BOUND BY
51-27.98N 140-52.07E, 51-29.02N 140-49.54E,
51-29.24N 140-49.82E, 51-28.22N 140-52.26E,
51-27.94N 140-53.74E, 51-27.69N 140-53.56E.

Reading this warning

Dredging
A dredger is deepening a channel or moving sediment, often with floating or submerged pipelines to the shore.
Until further notice
The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
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.

All warning terms →

Collected reports in this area · survey operations

131 within 180 nm since 2000 · 5 in the last 12 months · 2 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

56 survey operations listed in force · see all

Record snapshot 2026-09-28 11:18Z; 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.