Nav aids

Loran-c station caribou, rates 5930-MASTER and 9960-W, off air 061400Z to 061900Z dec, alternate 071400Z to…

NAVAREA IV 491/00

issued: 2000-12-01 10:58Z
status: cancelled 2000-12-07 02:07Z (archive)
self-cancels: 2000-12-07 20:00Z
authority: NAVCEN ALEXANDRIA 021858Z NOV 00
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. LORAN-C STATION CARIBOU, RATES 5930-MASTER AND 9960-W,
   OFF AIR 061400Z TO 061900Z DEC, ALTERNATE 071400Z TO
   071900Z DEC.
2. CANCEL THIS MSG 072000Z DEC.

Activity windows · 2 in this warning

opens (UTC)	closes (UTC)	local	length
2000-12-06 14:00Z	2000-12-06 19:00Z	—	5 h
2000-12-07 14:00Z	2000-12-07 19:00Z	—	5 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

Timeline

Cancel NAVAREA IV 491/00 and this msg, station restoredcancelled by · 2000-12-07

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

193 aids-to-navigation notices in force · see all

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.