Scientific moorings are established in Queen Maud Gulf, Canada at three positions with top floats at four, twenty, and four meters.
The Northwestern Passages · HYDROARC 235/22
What this record establishes
Cancelled notice · 2026-08-14 18:10Z
This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.
- Source and dates
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · NAVAREA XVIII 79/22 240900Z AUG 22.. Issued 2022-08-24 09:25Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-08-17 15:50Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- The Northwestern Passages. The parsed report position is 68.737, -102.514. 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
- 2022-08-24 09:25Z
- status
- Cancelled notice
- authority
- NAVAREA XVIII 79/22 240900Z AUG 22.
- NAVAREA
- NAVAREA XVIII · named as the source of this relay
- sea
- The Northwestern Passages
- position
- 68.737, -102.514
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:41Z
Original warning text
QUEEN MAUD GULF. CANADA. DNC 28. SUB-SURFACE SCIENTIFIC MOORINGS ESTABLISHED: A. 68-39.32N 103-00.52W, TOP FLOAT FOUR METERS. B. 68-39.93N 103-00.88W, TOP FLOAT 20 METERS. C. 68-53.41N 101-31.16W, TOP FLOAT FOUR METERS.
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
24 within 180 nm since 2008 · 6 in the last 12 months · 3 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 established in 68-55.94N 105-49.66W, top float 122 meters2026-09-25
- Scientific mooring established in 68-55.72N 105-48.26W, top float 127 meters2026-09-25
- Scientific mooring established in 68-48.95N 105-06.53W, top float 69 meters2026-09-25
- Scientific mooring established in 68-39.93N 103-00.86W, top float 126 meters2026-09-24
- Scientific mooring established in 68-53.41N 101-31.15W, top float 49 meters2026-09-24
- Scientific moorings established in: a. 69-42.02N 095-42.64W, least depth 43 meters2026-09-23
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
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-09-28 09:33Z; 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.