Scientific mooring, top float 37 meters, established in 70-42.59N 117-51.21W
The Northwestern Passages · HYDROARC 270/21
What this record establishes
Archived notice · 2022-03-25 11:51Z
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 XVIII 112/21 070235Z OCT 21.. Issued 2021-10-07 02:44Z. 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
- The Northwestern Passages. The parsed report position is 70.710, -117.853. 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 The Northwestern Passages →
- issued
- 2021-10-07 02:44Z
- status
- Archived notice
- authority
- NAVAREA XVIII 112/21 070235Z OCT 21.
- NAVAREA
- NAVAREA XVIII · named as the source of this relay
- sea
- The Northwestern Passages
- position
- 70.710, -117.853
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
AMUNDSEN GULF. CANADA. DNC 28. SCIENTIFIC MOORING, TOP FLOAT 37 METERS, ESTABLISHED IN 70-42.59N 117-51.21W.
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.
Collected reports in this area · survey operations
9 within 180 nm since 2006 · 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.
- Scientific mooring, top float 12 meters below surface, established in 70-34.7N 123-38.2W2020-09-22
- Scientific mooring, top float 348 meters below surface, established in 70-12.06N 123-09.47W2018-10-03
- Scientific mooring, top float 149 meters below surface, established in 70-23.62N 124-32.43W2018-10-03
- Scientific moorings established in: a. 71-18.66N 127-35.62W, top float 75 meters2017-09-28
- Canada DNC 282017-09-21
- Scientific mooring, top float 292 meters below surface, established in 70-40.87N 126-52.28W2017-08-04
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
- 0.3 meter rock depth reported in 70-32.05N 115-59.06WWrecks · 38.1 nm
Worldwide in the collected sources
50 survey operations listed in force · see all
Record snapshot 2026-09-24 23:11Z; 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.