Underwater operations 22 thru 26 nov, alternate 27 nov thru 01 dec by M/V ocean guardian in area bound by…
North Pacific Ocean · HYDROPAC 3313/22
What this record establishes
Archived notice · 2022-11-22 12:05Z
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 425/22 211139Z NOV 22.. Issued 2022-11-21 12:04Z. 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
- North Pacific Ocean. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel HYDROPAC 3313/22 and this msg, operations postponedlater cancellation notice
Current notices and reporting history in the North Pacific Ocean →
- issued
- 2022-11-21 12:04Z
- status
- Archived notice
- self-cancels
- 2022-12-02 00:01Z
- authority
- NAVAREA XI 425/22 211139Z NOV 22.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- North Pacific Ocean
- position
- 22.742, 143.667
- vessel
- M/V OCEAN GUARDIAN · 3 messages
- 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. DNC 12. 1. UNDERWATER OPERATIONS 22 THRU 26 NOV, ALTERNATE 27 NOV THRU 01 DEC BY M/V OCEAN GUARDIAN IN AREA BOUND BY 22-31.00N 143-23.00E, 22-58.00N 143-23.00E, 22-58.00N 143-57.00E, 22-31.00N 143-57.00E. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 020001Z DEC 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.
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- 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.
- 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.
Collected reports in this area · survey operations
8 within 180 nm since 2003 · 0 in the last 12 months · 0 listed in force now
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.
- Survey operations 02 thru 09 oct by M/V yokosuka with submersible shinkai 6500 in areas within two miles of:…2024-10-01
- Underwater operations in progress until 02 nov by unmanned seven meter vessel in vicinity of trackline…2018-10-26
- Underwater operations 28 jul thru 03 aug by M/V natsushima with submersible within: a. three miles of…2010-07-23
- Underwater operations 27 may thru 07 jun by M/V yokosuka with submersible in areas: a. between 26-30N 30-00N…2009-05-23
- Survey operations 15 may thru 06 jun by M/V kairei towing 5500 meter long cable in areas: a. between 27-10N…2006-05-10
- Submarine research operations during daylight hours daily 22 oct thru 04 nov by M/V natsushima and…2005-10-17
Month of issue in the collected archive
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
55 survey operations listed in force · see all
Record snapshot 2026-10-02 07:17Z; 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.