Nav aids

Coast guard stations boston, portsmouth and miami hf dsc unreliable 161400Z to 161500Z and 191600Z to…

U.S · NAVAREA IV 237/03

issued: 2003-06-12 09:50Z
status: cancelled 2003-06-16 15:00Z (archive)
self-cancels: 2003-06-20 01:01Z
authority: COGARD CAMSLANT 111950Z JUN 03
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. U.S. COAST GUARD STATIONS BOSTON, PORTSMOUTH AND MIAMI HF DSC
   UNRELIABLE 161400Z TO 161500Z AND 191600Z TO 200001Z JUN.
2. CANCEL THIS MSG 200101Z JUN.

Activity windows · 2 in this warning

opens (UTC)	closes (UTC)	local	length
2003-06-16 14:00Z	2003-06-16 15:00Z	—	1 h
2003-06-19 16:00Z	2003-06-20 00:01Z	—	8 h 01

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

Timeline

Coast guard stations boston, portsmouth and miami hf dsc unreliable 161800Z to 161900Z and 191600Z to…cancelled by · 2003-06-16

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.