Bottom scientific mooring, at depth 16 meters, established until 30 jul in 53-32-52N 143-05-51E
Sea of Okhotsk · HYDROPAC 1925/20
What this record establishes
Archived notice · 2020-07-31 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 70/20 290909Z JUN 20.. Issued 2020-06-29 09:26Z. 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 parsed report position is 53.548, 143.097. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Current notices and reporting history in the Sea of Okhotsk →
- issued
- 2020-06-29 09:26Z
- status
- Archived notice
- authority
- NAVAREA XIII 70/20 290909Z JUN 20.
- NAVAREA
- NAVAREA XIII · named as the source of this relay
- sea
- Sea of Okhotsk
- position
- 53.548, 143.097
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SEA OF OKHOTSK. SAKHALIN. DNC 24. 1. BOTTOM SCIENTIFIC MOORING, AT DEPTH 16 METERS, ESTABLISHED UNTIL 30 JUL IN 53-32-52N 143-05-51E. 2. CANCEL THIS MSG 31 JUL 20.
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.
- Scientific mooring
- Instruments anchored to the seabed and held up by floats, sometimes just below the surface, left for months to measure the ocean.
- 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 · survey operations
136 within 180 nm since 2000 · 5 in the last 12 months · 2 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 in progress until 25 oct by M/V fyodor kovrov in area bound by 53-46.10N 141-20.00E,…2026-09-19
- Survey operations in progress until 25 oct by M/V fyodor kovrov in area bound by 53-55.97N 142-53.27E,…2026-09-15
- Survey operations in progress until 25 oct by M/V fyodor kovrov in areas bound by: a. 53-55.97N 142-53.27E,…2026-09-14
- Underwater operations 25 may thru 31 dec in area bound by 51-34.92N 143-24.27E, 51-34.90N 144-06.22E,…2026-05-22
- Underwater operations 01 may thru 31 oct in areas bound by: a. 51-27.95N 143-26.72E, 51-29.25N 143-45.52E,…2026-04-23
- Survey operations 25 jun until further notice by vessels in area bound by 52-37.78N 143-52.27E, 52-38.92N…2025-06-24
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 2026-10-02 17:52Z; 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.