If you are on the west coast of Ireland or in the Minch near Cape Wrath, then you will find it tricky to get a mobile phone signal or internet. The same applies to crossing Biscay, or the North Sea. That’s when Navtex comes into its own. It receives weather information on 2 frequencies, one for the international GMDSS areas, the other for more local weather.
That was on Ariadne, but Susie was not allowed such luxuries on the Golden Globe, so I took it off. In my ownership, Teal never went out of range of internet or mobile phone services, so it has rested in a cupboard at home for a few years.
This is a real bargain for any budding passage makers.