Nav aids

Nos chart 11420 (28TH ed)

North Atlantic Ocean · NAVAREA IV 346/11

What this record establishes

Archived notice · 2011-10-08 09:14Z

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 NAVCEN DGPS 766/11 031708Z OCT 11.. Issued 2011-10-03 17:43Z. 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: North Atlantic Ocean. The parsed report position is 24.582, -81.653. 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 North Atlantic Ocean →

issued: 2011-10-03 17:43Z
status: Archived notice
authority: COGARD NAVCEN DGPS 766/11 031708Z OCT 11.
NAVAREA: NAVAREA IV
issued by: COGARD NAVCEN
sea: North Atlantic Ocean
position: 24.582, -81.653
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

FLORIDA-SOUTH COAST.
NOS CHART 11420 (28TH ED).
KEY WEST DGPS STATION 24-34.9N 081-39.2W UNUSABLE.

Reading this warning

Chart reference: The number of the nautical chart on which the reported position lies.
GNSS / GPS: Satellite positioning — GPS and other systems — and the testing, jamming and interference that make it unreliable in an area.
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 · aids-to-navigation notices

100 within 180 nm since 2000 · 3 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

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

140 aids-to-navigation notices listed in force · see all

Record snapshot 2026-09-26 19:27Z; source collection times vary.

Nav aids

Lights extinguished, buoys off station, RACON/NAVTEX outages. All current aids-to-navigation notices →

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.