Four scientific moorings established in Beaufort and Chukchi Seas off Alaska at various positions and depths.
Arctic Ocean · HYDROARC 283/24
What this record establishes
Listed in force
The latest collected record lists this warning as active. This is the status of the notice, not a live observation of conditions at the location.
- Source and dates
- NGA MSI in-force warnings (DailyMem*.txt). Issued 2024-12-17 08:58Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-10-01 05:32Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- Arctic Ocean. The parsed report position is 72.432, -156.861. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
- issued
- 2024-12-17 08:58Z
- status
- Listed in force
- sea
- Arctic Ocean
- position
- 72.432, -156.861
- nearest port
- Tuktoyaktuk · 498 nm
- source
- NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-08-17 13:41Z
Original warning text
BEAUFORT SEA. CHUKCHI SEA. ALASKA. DNC 27. SCIENTIFIC MOORINGS ESTABLISHED: A. BCE-24, IN 71-40.40N 154-59.90W, AT DEPTH 108 METERS, TOP FLOAT 20 METERS. B. BCC-24, IN 71-44.10N 155-09.68W, AT DEPTH 291 METERS, TOP FLOAT 21 METERS. C. BCW-24, IN 71-47.80N 155-20.83W, AT DEPTH 165 METERS, TOP FLOAT 40 METERS. D. NAP-24T, IN 74-31.37N 161-56.19W, AT DEPTH 1680 METERS, TOP FLOAT 28 METERS.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- 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.
Conditions at the position · now
loading…
MET Norway · NOAA WaveWatch III · HYCOM · GEBCO 2020 · model data at the centroid, not an observation
Collected reports in this area · survey operations
63 within 180 nm since 2004 · 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.
- Scientific moorings established in: a. 71-47.78N 155-20.81W, top float 15 meters2023-10-25
- Scientific mooring, top float 35 meters, established in 74-31.38N 161-56.54W2023-10-25
- Scientific moorings established in: a. 71-18.16N 155-42.37W2023-08-09
- Scientific moorings established in: a. 70-43.82N 160-22.05W2023-08-09
- Scientific moorings established in: a. 71-47.78N 155-20.81W, top float 15 meters2022-09-11
- Scientific moorings established: a. 71-47.78N 155-20.81W, top float 15 meters2022-09-02
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
55 survey operations listed in force · see all
Record snapshot 2026-09-25 21:18Z; 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.