Other

Commdet kodiak, ak remote site shemya 52-43N 174-07E 4125KHZ services unreliable 201300Z thru 201600Z oct

Bering Sea · NAVAREA XII 476/20

What this record establishes

Archived notice · 2020-10-20 17:00Z

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) · COGARD COMMUNICATIONS COMMAND 201519Z OCT 20.. Issued 2020-10-20 15:28Z. 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: Bering Sea. The parsed report position is 52.717, 174.117. 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 Bering Sea →

issued: 2020-10-20 15:28Z
status: Archived notice
self-cancels: 2020-10-20 17:00Z
authority: COGARD COMMUNICATIONS COMMAND 201519Z OCT 20.
NAVAREA: NAVAREA XII
issued by: COGARD COMMUNICATIONS COMMAND
sea: Bering Sea
position: 52.717, 174.117
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

BERING SEA.
ALASKA.
1. COMMDET KODIAK, AK REMOTE SITE SHEMYA
   52-43N 174-07E 4125KHZ SERVICES UNRELIABLE
   201300Z THRU 201600Z OCT.
2. CANCEL THIS MSG 201700Z OCT 20.

Reading this warning

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.
Inoperative / unreliable / off air: An aid or radio service is not working as charted or published.
Date-time group (DTG): A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
CANCEL THIS MSG: The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · other warnings

3 within 180 nm since 2001 · 0 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.

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

Worldwide in the collected sources

23 other warnings listed in force · see all

Record snapshot 2026-10-01 22:01Z; source collection times vary.

Other

Everything the classifier did not place elsewhere. All current other warnings →

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.