Seismic survey in progress until 12 jul in area bound by 29-55N 123-25E, 28-40N 123-05E, 28-15N 123-30E,…
Eastern China Sea · HYDROPAC 1004/02
What this record establishes
Archived notice · 2002-07-13 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 349/02 291202Z MAY 02. Issued 2002-05-29 12:40Z. 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
- 2002-05-29 12:40Z
- status
- Archived notice
- authority
- NAVAREA XI 349/02 291202Z MAY 02
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- Eastern China Sea
- position
- 29.430, 123.928
- 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 12 JUL IN AREA BOUND BY 29-55N 123-25E, 28-40N 123-05E, 28-15N 123-30E, 28-40N 124-05E, 29-35N 124-40E, 30-40N 124-45E. 2. CANCEL THIS MSG 13 JUL.
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.
- 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
103 within 180 nm since 1998 · 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.
- Cable operations 24 thru 30 may, alternate 31 may thru 02 jun by cableship kddi ocean link in area bound by…2023-05-23
- Cable operations 18 thru 23 nov, alternate 24 thru 29 nov by cableship fu hai along trackline joining…2021-11-17
- Cable operations 03 thru 10 nov, alternate 11 thru 16 nov by cableship fu hai in area bound by 29-53.5N…2021-11-01
- Cable operations 19 thru 23, alternate 24 thru 30 oct by cableship fu hai in area bound by 30-22.7N…2021-10-18
- Cable operations 11 thru 15, alternate 16 thru 20 oct by cableship fu hai in area bound by 30-44.4N…2021-10-10
- Cable operations 19 thru 24 dec, alternate 25 dec thru 02 jan 21 by cableship kddi ocean link in area bound…2020-12-21
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
- Large buoy reported to exist in 31-00N 124-00EWrecks · 94.3 nm
Worldwide in the collected sources
23 cable & pipeline work listed in force · see all
Record snapshot 2026-10-03 05:44Z; 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.