Nga chart 15744 (1ST ed)
The Northwestern Passages · HYDROARC 144/11
What this record establishes
Archived notice · 2012-07-01 08:50Z
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 110/11 281106Z AUG 11.. Issued 2011-08-28 11:39Z. 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 71.767, -96.552. 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 144/11, 178/11 and this msglater cancellation notice
Current notices and reporting history in the The Northwestern Passages →
- issued
- 2011-08-28 11:39Z
- status
- Archived notice
- authority
- NAVAREA XVIII 110/11 281106Z AUG 11.
- NAVAREA
- NAVAREA XVIII · named as the source of this relay
- sea
- The Northwestern Passages
- position
- 71.767, -96.552
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
ARCTIC. CANADA-NORTH COAST. FRANKLIN STRAIT. NGA CHART 15744 (1ST ED). 23 METER SHOAL REPORTED IN 71-46.022N 096-33.121W.
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.
Collected reports in this area · wrecks & obstructions
12 within 180 nm since 2011 · 0 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.
- Depths reported: a. 29.3 meters in 71-22.82N 096-41.27W2025-10-01
- Shoals reported in: a. 31.7 meters, 70-03.31N 097-42.44W2022-09-26
- 5.2 meter depth reported in 69-43N 091-21W2018-08-28
- Shoals reported: a. 6.0 meters in 69-30.76N 094-59.05W2017-08-26
- 26.4 meter shoal in 71-45.27N 096-34.24W2016-09-11
- 9.3 meter shoal reported in 69-23.57N 094-02.41W2015-09-08
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 · 25.2 nm
Worldwide in the collected sources
38 wrecks & obstructions listed in force · see all
Record snapshot 2026-10-02 16:58Z; 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.