VHF radio allows instant communication between your boat and other boats, marinas, bridges, and maritime authorities.
The VHF radio is the recommended means of communication on the coastal waters, and it transmits messages on high frequency waves. The VHF system consists of a VHF radio unit near the drivers position and a radio antenna located either on the mast or on the roof of the boat depending on the boat model.
Study the provided booklet for the local regulations and the functionalities related to the use of the VHF system.
For your safety, make sure the VHF system is operational before going out to open sea.