Sark's VHF Ariel will be turned off between 09:30 UTC and 14:00 UTC today (Tuesday 11th April 2017).
Mariners are advised that Coastguard VHF coverage to the East of Sark will be severely limited during this period.
To contact Guernsey Coastguard when in mobile telephone range call Guernsey Coastguard on 01481 711242.