Surveys

Hydrographic survey in progress until 121400Z sep by M/V marshal gelovany in area bound by 42-42N 134-58E,…

Japan Sea · HYDROPAC 1757/08

What this record establishes

Archived notice · 2008-09-12 15:00Z

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) · NAVAREA XIII 46/08 09 SEP 08.. Issued 2008-09-09 15:52Z. 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
2008-09-09 15:52Z
status
Archived notice
self-cancels
2008-09-12 15:00Z
authority
NAVAREA XIII 46/08 09 SEP 08.
NAVAREA
NAVAREA XIII · named as the source of this relay
sea
Japan Sea
position
43.352, 135.666
vessel
M/V MARSHAL GELOVANY · 9 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROGRAPHIC SURVEY IN PROGRESS UNTIL
   121400Z SEP BY M/V MARSHAL GELOVANY
   IN AREA BOUND BY
   42-42N 134-58E, 43-22N 134-58E,
   43-32N 135-13E, 43-40N 135-16E,
   43-43N 135-28E, 44-21N 135-58E,
   44-30N 136-10E, 42-42N 136-10E.
   FIVE MILE BERTH REQUESTED.
2. CANCEL THIS MSG 121500Z SEP.

Reading this warning

Survey operations
A research or survey vessel is mapping the seabed or water column, often while towing equipment.
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.
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.

All warning terms →

Collected reports in this area · survey operations

18 within 180 nm since 2003 · 1 in the last 12 months · 0 listed in force now

03
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

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

56 survey operations listed in force · see all

Record snapshot 2026-10-01 21:44Z; 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.