Tellie, Thanks for another super response to my questions. I reckon for the moment that I will go with what is planned noting your views. The ultraviolet looks like something for the future but I get the impression that the Z-Brane is over the top. Our liveaboard currently will only be for the warmer months and come October we will probably not use the boat much until the following March unless there is a period of good meteo here in the Med. Storeage systems will then feature on the agenda more. Longer term we plan to leave the med and head west depending on other things working out.
Do you also have experience of Cummins Onan generators and Garmin electronics for future reference?
Again many thanks for your quality responses, long may you be there for learners like us.
Melvyn