Nga chart 15881 (0 ed)
The Northwestern Passages · HYDROARC 133/11
What this record establishes
Archived notice · 2011-09-15 00:21Z
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 102/11 182302Z AUG 11.. Issued 2011-08-19 00:13Z. 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 69.692, -95.629. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel HYDROARC 133/11 and this msglater cancellation notice
Current notices and reporting history in the The Northwestern Passages →
- issued
- 2011-08-19 00:13Z
- status
- Archived notice
- authority
- NAVAREA XVIII 102/11 182302Z AUG 11.
- NAVAREA
- NAVAREA XVIII · named as the source of this relay
- sea
- The Northwestern Passages
- position
- 69.692, -95.629
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
ARCTIC. JAMES ROSS STRAIT. NGA CHART 15881 (0 ED). BOTTOM SCIENTIFIC MOORINGS EXTENDING ONE METER ABOVE SEA FLOOR ESTABLISHED IN: A. 69-35.34N 095-16.39W DEPTH 24 METERS. B. 69-42.48N 095-46.81W DEPTH 17 METERS. C. 69-46.79N 095-50.03W DEPTH NINE METERS.
Reading this warning
- Chart reference
- The number of the nautical chart on which the reported position lies.
- 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
20 within 180 nm since 2008 · 3 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 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
- Sub-surface scientific moorings established: a. 68-39.32N 103-00.52W, top float four meters2022-08-24
- Scientific mooring established in 69-56.79N 097-54.58W2015-08-28
- Victoria Strait2012-08-29
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
- Depths reported: a. 29.3 meters in 71-22.82N 096-41.27WWrecks · 102.1 nm
Worldwide in the collected sources
50 survey operations listed in force · see all
Record snapshot 2026-09-24 23:10Z; 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.