Hi, found your other posts that mentioned UK. Since I'm over hear in the colonies can't help much but plenty of EU cruisers on the forum to chime in.
I can offer a couple of general comments. Full coverage insurance will not be cheap
. A lot of cruisers sail without although you might want to consider at the minimum liability insurance. Some countries and many marinas
require it, just in case you happen to bump the $5 million mega yacht docked next door.
For a rough reference, I carry full insurance but currently only covered for coastal US and Bahamas
. For a boat valued under USD$100,000 I'm paying around $1000/year. Initially was quoted almost $2000/year but was able to negotiate a lower rate based on 30 years experience and owning a number of boats during that time. Also have to stay out of FL during hurricane
I am guessing global coverage would be at least double or triple that.