>>28475560
Depends mainly on where you want to live, size of your boat and what your docking fee is.
With some wrenching yourself and not picking some luxury sailing yacht but a fiberglass boat with good maintenance youll be looking at a minimum of 5k a year for savings to 15k a year for comfort. With a 25-40 foot boat you are living much more luxurious than any van desu, but you will have to pay up for that extra space and privacy. I couldnt live in a van and be treated like a homeless person needing to drive to the local 24/7 gym to take a shit at night.