Survey operations in progress until 25 dec by academic fersman towing five mile long cable in area bound by…
Sea of Okhotsk · HYDROPAC 3596/19
What this record establishes
Archived notice · 2019-12-26 00:01Z
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 152/19 310914Z OCT 19.. Issued 2019-10-31 09:19Z. 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
- 2019-10-31 09:19Z
- status
- Archived notice
- authority
- NAVAREA XIII 152/19 310914Z OCT 19.
- NAVAREA
- NAVAREA XIII · named as the source of this relay
- sea
- Sea of Okhotsk
- position
- 59.373, 158.753
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SEA OF OKHOTSK. RUSSIA. DNC 24. 1. SURVEY OPERATIONS IN PROGRESS UNTIL 25 DEC BY ACADEMIC FERSMAN TOWING FIVE MILE LONG CABLE IN AREA BOUND BY 58-13-23N 158-37-11E, 58-40-17N 157-15-50E, 59-40-30N 157-07-22E, 60-11-02N 157-45-04E, 59-46-27N 159-01-47E, 60-24-54N 159-52-49E, 60-02-18N 160-59-10E. SIX MILE BERTH REQUESTED. 2. CANCEL HYDROPAC 2418/19. 3. CANCEL THIS MSG 26 DEC 19.
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.
- 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.
- Wide berth requested
- Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROPAC
- The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · survey operations
7 within 180 nm since 2004 · 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.
- Survey operations 291400Z may to 151400Z jun and 231400Z jun to 141400Z jul by M/V vitse admiral vorontsov…2022-05-25
- Survey operations 31 jul thru 31 oct by M/V academic fersman towing five mile long cable in area bound by…2019-07-29
- Survey operations 31 jul thru 31 aug by M/V academic fersman towing five mile long cable in area bound by…2019-07-28
- Survey operations 12 thru 31 aug by M/V diabaz towing 1600 meter long cable within two miles of 58-02-48N…2007-08-13
- Survey operations in progress until 12 aug by M/V diabaz towing 1600 meter long cable within two miles of…2007-08-01
- Hydrographic survey in progress until 05 sep in area bound by 57-11.0N 156-38.5E, 57-32.0N 155-22.0E,…2004-08-16
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
56 survey operations listed in force · see all
Record snapshot 2026-10-03 03:39Z; 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.