Surveys

Hydrographic survey 22 thru 28 aug by M/V hakuho maru towing 7000 meter long cable in area bound by 14-00N…

Philippine Sea · HYDROPAC 1442/07

What this record establishes

Archived notice · 2007-08-29 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 361/07 170905Z AUG 07.. Issued 2007-08-17 13:17Z. 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: 2007-08-17 13:17Z
status: Archived notice
authority: NAVAREA XI 361/07 170905Z AUG 07.
NAVAREA: NAVAREA XI · named as the source of this relay
sea: Philippine Sea
position: 18.455, 139.045
vessel: M/V HAKUHO MARU · 9 messages
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROGRAPHIC SURVEY 22 THRU 28 AUG BY M/V HAKUHO MARU
   TOWING 7000 METER LONG CABLE IN AREA BOUND BY
   14-00N 136-00E, 18-00N 136-00E, 18-00N 138-00E,
   25-00N 138-00E, 25-00N 141-00E, 13-00N 141-00E,
   13-00N 138-00E, 14-00N 138-00E.
2. CANCEL THIS MSG 29 AUG.

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.
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.

All warning terms →

Collected reports in this area · survey operations

4 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.

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

50 survey operations listed in force · see all

Record snapshot 2026-09-25 02:02Z; 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.