Underwater operations 04 thru 09 jun by M/V natsushima with submersible in area bound by 17-00N 140-00E,…
Philippine Sea · HYDROPAC 1561/13
What this record establishes
Archived notice · 2013-06-10 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 407/13 301132Z MAY 13.. Issued 2013-05-30 16:52Z. 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
- Philippine 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 Philippine Sea →
- issued
- 2013-05-30 16:52Z
- status
- Archived notice
- authority
- NAVAREA XI 407/13 301132Z MAY 13.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- Philippine Sea
- position
- 14.242, 141.939
- vessel
- M/V NATSUSHIMA · 39 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN NORTH PACIFIC. 1. UNDERWATER OPERATIONS 04 THRU 09 JUN BY M/V NATSUSHIMA WITH SUBMERSIBLE IN AREA BOUND BY 17-00N 140-00E, 17-00N 144-00E, 12-00N 144-00E, 11-00N 140-00E. 2. CANCEL THIS MSG 10 JUN 13.
Reading this warning
- 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.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · survey operations
15 within 180 nm since 2000 · 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.
- Underwater operations 2200Z to 0800Z daily 12 and 14 jun in area bound by 13-27.75N 144-37.58E, 13-27.22N…2023-06-09
- Underwater operations 2200Z to 0800Z daily 12 thru 18 may in 13-29.50N 144-40.67E2023-05-03
- Underwater operations 2300Z to 0600Z daily 10 thru 12 apr in 13-16.20N 144-22.80E2023-04-05
- Survey operations 2100Z to 0800Z daily 09, 11 and 13 apr in 13-16.20N 144-22.80E2023-04-05
- Underwater operations 2200Z to 0600Z daily 03 thru 05 apr in 13-16.20N 144-22.80E2023-03-30
- Underwater operations in progress until 14 feb 19 by unmanned seven meter vessel in vicinity of trackline…2018-12-07
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
56 survey operations listed in force · see all
Record snapshot 2026-09-28 09:49Z; 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.