Surveys

Scientific mooring established in 68-23.75N 109-59.54W, top float 236 meters

The Northwestern Passages · HYDROARC 263/26

What this record establishes

Cancelled notice · 2026-09-28 16:45Z

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 in-force warnings (DailyMem*.txt). Issued 2026-09-26 14:38Z. First collected 2026-09-28 19:32Z; last seen in collection 2026-09-28 22:32Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
The Northwestern Passages. The parsed report position is 68.396, -109.992. 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
2026-09-26 14:38Z
status
Cancelled notice
sea
The Northwestern Passages
position
68.396, -109.992
source
NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-09-28 19:32Z

Original warning text

CORONATION GULF.
CANADA.
SCIENTIFIC MOORING ESTABLISHED IN
68-23.75N 109-59.54W, TOP FLOAT 236 METERS.

Reading this warning

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.

All warning terms →

Collected reports in this area · survey operations

18 within 180 nm since 2010 · 9 in the last 12 months · 2 listed in force now

10
15
20
25
26

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.

Month of issue in the collected archive

J
F
M
A
M
J
J
A
S
O
N
D

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

54 survey operations listed in force · see all

Record snapshot 2026-09-28 22:32Z; 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.