Seismic survey in progress until 04 apr by M/V tamhae 2 towing 1500 meter long cable in area bound by…
Eastern China Sea · HYDROPAC 579/07
What this record establishes
Archived notice · 2007-04-05 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 126/07 300805Z MAR 07.. Issued 2007-03-30 09:28Z. 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
- Eastern China 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 Eastern China Sea →
- issued
- 2007-03-30 09:28Z
- status
- Archived notice
- authority
- NAVAREA XI 126/07 300805Z MAR 07.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- Eastern China Sea
- position
- 33.271, 130.834
- vessel
- M/V TAMHAE 2 · 5 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. SEISMIC SURVEY IN PROGRESS UNTIL 04 APR BY M/V TAMHAE 2 TOWING 1500 METER LONG CABLE IN AREA BOUND BY 33-30.00N 137-20.00E, 34-12.43N 128-40.83E, 33-03.00N 127-40.00E, 32-05.00N 126-02.08E. 2. CANCEL THIS MSG 05 APR.
Reading this warning
- Seismic survey
- A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
- 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.
Collected reports in this area · cable & pipeline work
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.
- Submarine cable operations in progress until 12 may vicinity of trackline joining 34-46-25N 128-38-26E,…2008-04-28
- Cable operations in progress until 30 sep by M/V segyero-ho along trackline joining 35-47-26N 129-57-28E,…2002-08-15
- Underwater cable operations 032000Z to 131100Z aug by M/V kdd pacific link in area bound by 35-57.5N…2000-07-31
- Seismic survey in progress until 31 aug by M/V nordic explorer towing 3000 meter long cables in area bound…2000-07-07
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
23 cable & pipeline work listed in force · see all
Record snapshot 2026-10-03 03:09Z; source collection times vary.
Cable ops
Cable laying, pipeline and seismic operations. All current cable & pipeline work →
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.