Nav aids

Coast guard station boston (nmf) off air 051300Z to 051700Z may

Western North Atlantic · Massachusetts · Radio Services · U.S · NAVAREA IV 146/11

issued: 2011-05-01 06:19Z
status: cancelled 2011-05-02 19:40Z (archive)
self-cancels: 2011-05-05 18:00Z
authority: COGARD CAMSLANT 271554Z APR 11.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH ATLANTIC.
MASSACHUSETTS.
RADIO SERVICES.
1. U.S. COAST GUARD STATION BOSTON (NMF) OFF AIR
   051300Z TO 051700Z MAY. GMDSS AND DSC SERVICES
   UNAVAILABLE. WEATHER FAX, ICE FAX AND SITOR
   WILL BE TRANSMITTED FROM U.S. COAST GUARD
   STATION CHESAPEAKE (NMN). HF DSC CALLS WILL
   BE ANSWERED BY CHESAPEAKE (NMN).
2. CANCEL THIS MSG 051800Z MAY.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2011-05-05 13:00Z	2011-05-05 17:00Z	—	4 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 146/11 and this msgcancelled by · 2011-05-02

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.