Seismic survey 15 jul thru 20 sep by M/V pacific explorer towing six 5500 meter long cables in area bound by…
Sea of Okhotsk · HYDROPAC 1992/11
What this record establishes
Archived notice · 2011-08-26 21:15Z
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 XIII 25/11 110914Z JUL 11.. Issued 2011-07-11 14:11Z. 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
- Sea of Okhotsk. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel HYDROPAC 1992 and this msglater cancellation notice
Current notices and reporting history in the Sea of Okhotsk →
- issued
- 2011-07-11 14:11Z
- status
- Archived notice
- authority
- NAVAREA XIII 25/11 110914Z JUL 11.
- NAVAREA
- NAVAREA XIII · named as the source of this relay
- sea
- Sea of Okhotsk
- position
- 51.337, 144.135
- vessel
- M/V PACIFIC EXPLORER · 44 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SAKHALIN-EAST COAST. 1. SEISMIC SURVEY 15 JUL THRU 20 SEP BY M/V PACIFIC EXPLORER TOWING SIX 5500 METER LONG CABLES IN AREA BOUND BY 51-11-43.2N 144-17-59.5E, 51-16-03.1N 143-55-02.3E, 51-20-50.2N 143-51-05.3E, 51-29-51.1N 144-20-21.6E, 51-25-42.8N 144-23-40.2E, 51-22-07.9N 144-12-29.4E, 51-12-27.7N 144-20-15.0E. FIVE MILE BERTH REQUESTED. 2. CANCEL THIS MSG 21 SEP.
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.
- Wide berth requested
- Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
- 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
36 within 180 nm since 2001 · 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 in progress until 30 aug along trackline joining 49-03-47N 140-18-42E, 49-03-45N…2018-08-04
- Cable operations 01 jun thru 10 jul in vicinity of trackline joining 49-03-47N 140-18-42E, 49-03-45N…2018-05-28
- Seismic survey 09 oct thru 09 dec by M/V geophysic towing 1500 meter long cable in area bound by 51-12-28N…2016-10-06
- Cable repair operations 02 aug thru 20 sep vicinity of trackline joining 52-12-41N 141-31-24E, 52-12-44N…2016-07-29
- Seismic survey in progress until 01 aug by M/V hai yang shi you 718 towing 3.3 mile long cable in area bound…2016-07-11
- Seismic survey in progress until 01 aug by M/V hai yang shi you 718 towing 3.3 mile long cable in area bound…2016-07-08
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
- Wave rider buoy established in 51-22.54N 144-14.17ENav aids · 4.4 nm
- Underwater operations 25 may thru 31 dec in area bound by 51-34.92N 143-24.27E, 51-34.90N 144-06.22E,…Surveys · 9 nm
- Underwater operations 01 may thru 31 oct in areas bound by: a. 51-27.95N 143-26.72E, 51-29.25N 143-45.52E,…Surveys · 16.3 nm
Worldwide in the collected sources
23 cable & pipeline work listed in force · see all
Record snapshot 2026-10-02 20:51Z; 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.