Guernsey Coastguard Navigation Warnings
Live Round Firing
Mariners must keep clear of the seas near the Fort Le Marchant firing range when red flags are flying in the Northern part of Guernsey between the Grande Hougue and Le Plomb, at Le Fontenelle. On the days of firing, navigational warnings are broadcast by Guernsey Coastguard on VHF Channel 20.
Local Notices to Mariners (LNTMs)