Nga chart 15863 (0 ed)
The Northwestern Passages · HYDROARC 48/10
What this record establishes
Archived notice · 2010-08-15 06:03Z
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 41/10 010303Z AUG 10 - NAVAREA XVIII 40/10 010303Z AUG 10 - NAVAREA XVII 35/10 010303Z AUG 10.. Issued 2010-08-01 06:30Z. 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 71.999, -94.755. 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
- Nga chart 15863 (0 ed)cancelled by this notice
- Nga chart 15926 (0 ed)cancelled by this notice
- Cancel HYDROARC 11/10, 12/10, 14/10, 17/10, 18/10, 19/10, 29/10, 31/10, 32/10, 36/10, 48/10, 53/10 and this…later cancellation notice
Current notices and reporting history in the The Northwestern Passages →
- issued
- 2010-08-01 06:30Z
- status
- Archived notice
- authority
- NAVAREA XVIII 41/10 010303Z AUG 10 - NAVAREA XVIII 40/10 010303Z AUG 10 - NAVAREA XVII 35/10 010303Z AUG 10.
- NAVAREA
- NAVAREA XVIII · named as the source of this relay
- sea
- The Northwestern Passages
- position
- 71.999, -94.755
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
ARCTIC. BELLOT STRAIT. NGA CHART 15863 (0 ED). 1. SCIENTIFIC MOORINGS ESTABLISHED IN 71-59.97N 094-45.28W AT DEPTH 122.8 METERS. 2. CANCEL HYDROARC 22/10 AND 25/10.
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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROARC
- The U.S. long-range warning series for the Arctic Ocean.
Collected reports in this area · survey operations
11 within 180 nm since 2008 · 1 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 moorings established in: a. 69-42.02N 095-42.64W, least depth 43 meters2026-09-23
- Scientific mooring, top float 30 meters, established in 74-27.83N 090-32.81W2023-10-02
- Scientific mooring, top float 30 meters, established in 74-08.75N 091-02.83W2023-10-02
- Scientific moorings established: a. 74-36.37N 091-15.05W, top float 147 meters2022-09-23
- Scientific mooring established in 69-56.79N 097-54.58W2015-08-28
- Nga chart 15881 (0 ed)2011-09-16
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
- Depths reported: a. 29.3 meters in 71-22.82N 096-41.27WWrecks · 54 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-02 15:57Z; 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.