Surveys

Survey operations 27 jul thru 20 aug along trackline joining 42-32.00N 131-10.40E, 42-11.70N 131-15.50E,…

Japan Sea · HYDROPAC 2037/22

What this record establishes

Archived notice · 2022-08-21 00:01Z

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 63/22 252313Z JUL 22.. Issued 2022-07-25 23:31Z. 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 the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Japan Sea →

issued
2022-07-25 23:31Z
status
Archived notice
self-cancels
2022-08-21 00:01Z
authority
NAVAREA XIII 63/22 252313Z JUL 22.
NAVAREA
NAVAREA XIII · named as the source of this relay
sea
Japan Sea
position
43.770, 137.192
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

SEA OF JAPAN.
RUSSIA.
DNC 23, DNC 24.
1. SURVEY OPERATIONS 27 JUL THRU 20 AUG
   ALONG TRACKLINE JOINING
   42-32.00N 131-10.40E, 42-11.70N 131-15.50E,
   42-22.80N 131-18.40E, 39-58.00N 133-16.90E,
   47-26.10N 141-53.40E, 45-26.30N 139-13.20E,
   42-29.00N 136-34.00E.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROPAC 2031/22.
3. CANCEL THIS MSG 210001Z AUG 22.

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.
Survey operations
A research or survey vessel is mapping the seabed or water column, often while towing equipment.
Track line joining
Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
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.
HYDROPAC
The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf 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

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

03
05
10
15
20
22

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 21:45Z; 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.