Originally Posted by casey1999
Seems your data shows a lot more rescues are occuring. What is the difference between the red and blue bars, legend is partly cut off.
Their both from Epirps but with two different frequencies, the blue one uses 121.5MHz and the red ones 406MHz. The first ones had a much lesser range, were smaller and a lot cheaper. They finished with them in 2010. Till then here a coastal boat was only required to have one of those (121.5) while a 406MHz was mandatory for a pleasure boat with a licence to sail more than 200Nm offshore. Since 2009 the 406MHz is mandatory for both licences.