Survey operations 30 apr thru 24 may, alternate 25 thru 31 may by M/V orient explorer towing 3000 meter long…
Philippine Sea · HYDROPAC 614/01
What this record establishes
Archived notice · 2001-06-01 00:00Z
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 219/01 250800Z APR 01. Issued 2001-04-25 10:30Z. 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 the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
Current notices and reporting history in the Philippine Sea →
- issued
- 2001-04-25 10:30Z
- status
- Archived notice
- authority
- NAVAREA XI 219/01 250800Z APR 01
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- Philippine Sea
- position
- 24.683, 122.265
- vessel
- M/V ORIENT EXPLORER · 116 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. SURVEY OPERATIONS 30 APR THRU 24 MAY, ALTERNATE 25 THRU 31 MAY BY M/V ORIENT EXPLORER TOWING 3000 METER LONG CABLE VICINITY OF TRACKLINES JOINING: A. 24-51N 121-50E, 24-55N 122-01E, 24-19N 122-22E. B. 24-51N 121-50E, 25-04N 122-15E, 25-03N 122-18E. C. 24-45N 122-33E, 24-41N 122-35E, 24-09N 122-41E. 2. CANCEL THIS MSG 01 JUN.
Reading this warning
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- Towed array / streamer
- Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
- Tow / towing
- A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
- 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.
- 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
5 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.
- Survey operations in progress until 09 jun by M/V polaris towing equipment in area bound by 24-59N 122-27E,…2016-05-29
- Underwater operations daily 27 may thru 07 jun by M/V kdd ocean link in area bound by 25-47.9N 122-05.8E,…2006-05-25
- Underwater operations 28 apr thru 02 may by M/V joides resolution vicinity 24-48N 122-30E2001-04-27
- Underwater operations in progress until 30 jul within two miles of 25-13-21N 120-04-18E2000-06-06
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
- 74 km s of yonakuni, japanQuakes · 63.7 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-02 23:08Z; 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.