You can probably find a
boat to
charter for a year. There could be couple of issues associated with this: as you will be far from the main base even from the base country most of the time, any
repair or servicing that you might need could be a problem. Secondly, most
charter boats are insured for the home country, at most for some neigbouring countries. If you charter for a year, probably you will want to visit some relatively
remote countries as well, and thus the
insurance policy will have to be changed. You will also have to deal with yr laundries which may not be easy everywhere in the
Med. Lastly, winters are cold in the Med, go for a boat with reverse cycled A/C, genset or at least with a
heater (Webosto or a kind..)
Cheers
Yeloya