Nga chart 15953 (0 ed)
The Northwestern Passages · HYDROARC 73/10
What this record establishes
Archived notice · 2011-04-30 08:20Z
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 82/10 061115Z SEP 10.. Issued 2010-09-06 16:27Z. 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 67.971, -112.672. 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 15953 (0 ed)cancelled by this notice
These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.
- HYDROARC 15/082008-09-06 · Archived notice
- HYDROARC 1/102010-07-02 · Archived notice
- HYDROARC 71/102010-09-05 · Archived notice
- HYDROARC 73/10 · this notice2010-09-06 · Archived notice
Current notices and reporting history in the The Northwestern Passages →
- issued
- 2010-09-06 16:27Z
- status
- Archived notice
- authority
- NAVAREA XVIII 82/10 061115Z SEP 10.
- NAVAREA
- NAVAREA XVIII · named as the source of this relay
- sea
- The Northwestern Passages
- position
- 67.971, -112.672
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
ARCTIC. CORONATION GULF. NGA CHART 15953 (0 ED). 1. 2.3 METER SHOAL REPORTED IN 67-58.27N 112-40.34W. 2. CANCEL HYDROARC 1/10.
Reading this warning
- Chart reference
- The number of the nautical chart on which the reported position lies.
- Shoal / reported depth
- Water shallower than the chart shows — a newly found shoal, a reported depth, or less water than charted.
- 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 · wrecks & obstructions
12 within 180 nm since 2008 · 1 in the last 12 months · 1 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.
- 0.3 meter rock depth reported in 70-32.05N 115-59.06W2026-09-18
- Three meter shoal in 69-08.65N 113-47.87W2019-09-13
- 5.4 meter shoal in 68-28.50N 111-03.66W2019-09-03
- 6.3 meter shoal in 68-35.41N 111-01.28W2019-08-19
- Shoals reported in: a. 24.5 meters 69-01.4N 105-12.8W2018-09-06
- Shoals reported in: a. 24.5 meters 69-01.4N 105-12.8W2018-08-29
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
No other collected notice is currently listed in force within this radius. This does not establish safe conditions.
Worldwide in the collected sources
38 wrecks & obstructions listed in force · see all
Record snapshot 2026-10-02 20:15Z; source collection times vary.
Wrecks
Dangerous wrecks, shoals and submerged obstructions. All current wrecks & obstructions →
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.