Marine VHF
radio is the best way of summoning help, you can contact the coastguard up to 50
miles off-shore and talk to other yachts up to 15 to 20 miles on the open sea.
If you use a marine VHF radio onboard your yacht you are required, by
law, to hold a marine radio operators certificate.
This
is a 1 day course, which on completion, you will be a competent radio operator
and know the correct procedure for distress, urgency, safety by means of marine
VHF DSC radio.