As well as being a useful way of communicating with other boats, harbours and marinas, radios are still the preferred way of calling for help while afloat. It is important that people using radios know how to do so correctly as failure to do so can compromise the whole distress signalling system.
There are a number of operators certificates available depending on the type of radios carried. The majority of leisure users will be using VHF radios and should hold the Short Range Certificate.
The ISA does not provide training or certification in the use of marine radios as this function is undertaken by the Maritime Radio Affairs Unit in the Department of Transport, Tourism & Sport.
A list of DTTAS approved providers for this course is available here