Other

Cancel HYDROPAC 4553/17 and this msg, operations postponed

Western North Pacific · Philippine Sea · Japan · HYDROPAC 4583/17

What this record establishes

Archived notice · 2017-12-26 12:13Z

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 840/17 261209Z DEC 17.. Issued 2017-12-26 12:13Z. 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 · Philippine Sea · Japan. 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
2017-12-26 12:13Z
status
Archived notice
authority
NAVAREA XI 840/17 261209Z DEC 17.
NAVAREA
NAVAREA XI · named as the source of this relay
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH PACIFIC.
PHILIPPINE SEA.
JAPAN.
DNC 12.
CANCEL HYDROPAC 4553/17 AND THIS MSG,
OPERATIONS POSTPONED.

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.
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.

All warning terms →

Nearby notices listed in force · within 120 nm

No parsed position is available for this comparison.

Worldwide in the collected sources

20 other warnings listed in force · see all

Record snapshot 2026-09-24 14:11Z; source collection times vary.

Other

Everything the classifier did not place elsewhere. All current other warnings →

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.