All depends on how much use the boat
At 1 month use per year, chartering will likely be cheaper once you account for slip fees
, haul outs, bottom paint
, engine repairs
and the fact that you will probably eat up at least 1 week of that month working on the boat
With a charter
boat, you bring you bags and food
and it's someone else's problem when your month is done.
On the other hand, if you will be spending 6 months per year, the costs of buying
are almost unchanged but the charter
boat will be 5-6times as expensive.