Surveys

Underwater operations 11 thru 13 oct by M/V yokosuka with submersible in areas between: a. 28-30N 30-00N and…

Western North Pacific · Japan · Nampo Shoto · HYDROPAC 2065/10

What this record establishes

Archived notice · 2010-10-14 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 XI 750/10 060752Z OCT 10.. Issued 2010-10-06 08:24Z. 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
Western North Pacific · Japan · Nampo Shoto. No usable coordinates were parsed; a location-based nearby search is unavailable. Check the original wording for limits and qualifications.

Related notices and cancellation links

issued
2010-10-06 08:24Z
status
Archived notice
authority
NAVAREA XI 750/10 060752Z OCT 10.
NAVAREA
NAVAREA XI · named as the source of this relay
vessel
M/V YOKOSUKA · 99 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH PACIFIC.
JAPAN.
NAMPO SHOTO.
1. UNDERWATER OPERATIONS 11 THRU 13 OCT
   BY M/V YOKOSUKA WITH SUBMERSIBLE
   IN AREAS BETWEEN:
   A. 28-30N 30-00N AND 140-00E 141-30E.
   B. 31-00N 31-50N AND 138-00E 138-40E.
   C. 26-00N 28-30N AND 138-30E 140-00E.
2. CANCEL HYDROPAC 2025/10.
3. CANCEL THIS MSG 14 OCT.

Reading this warning

Underwater operations
Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
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.
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.

All warning terms →

Nearby notices listed in force · within 120 nm

No parsed position is available for this comparison.

Worldwide in the collected sources

55 survey operations listed in force · see all

Record snapshot 2026-10-02 09:37Z; 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.