Seismic survey 02 jun thru 31 aug by M/V polarcus amani, M/V polarcus asima and M/V orient explorer towing…
Sea of Okhotsk · HYDROPAC 1786/15
What this record establishes
Archived notice · 2015-06-01 09:29Z
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 56/15 310903Z MAY 15.. Issued 2015-05-31 09:25Z. 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
Current notices and reporting history in the Sea of Okhotsk →
- issued
- 2015-05-31 09:25Z
- status
- Archived notice
- authority
- NAVAREA XIII 56/15 310903Z MAY 15.
- NAVAREA
- NAVAREA XIII · named as the source of this relay
- sea
- Sea of Okhotsk
- position
- 52.743, 144.065
- vessels
- M/V ORIENT EXPLORER · 116 messagesM/V POLARCUS AMANI · 13 messagesM/V POLARCUS ASIMA · 48 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SEA OF OKHOTSK. SAKHALIN-EAST COAST. DNC 24. 1. SEISMIC SURVEY 02 JUN THRU 31 AUG BY M/V POLARCUS AMANI, M/V POLARCUS ASIMA AND M/V ORIENT EXPLORER TOWING EIGHT 2.8 MILE LONG CABLES IN AREA BOUND BY 52-10N 143-10E, 53-25N 143-10E, 53-30N 144-13E, 53-30N 144-43E, 52-00N 145-05E, 52-00N 144-36E. FIVE MILE BERTH REQUESTED. 2. CANCEL THIS MSG 01 SEP 15.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- Seismic survey
- A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
- 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
39 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.
- 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
- Seismic survey 01 thru 31 jul by M/V hai yang shi you 718 in area bound by 51-28-09N 143-29-07E, 51-34-55N…2016-06-30
- Seismic survey 15 aug thru 15 sep by M/V diabaz towing 1200 meter long cable in area bound by 51-20-35N…2015-08-13
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
- 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 · 78.5 nm
- Wave rider buoy established in 51-22.54N 144-14.17ENav aids · 82.3 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 · 93.4 nm
Worldwide in the collected sources
24 cable & pipeline work listed in force · see all
Record snapshot 2026-10-02 03:21Z; 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.