One of the problems with buying a boat to use for three months then sail back is that not all boats are really ready to go even when in good shape at triple the price
range. Things always need to be fixed or repaired as well as safety gear
upgraded or added. Getting a boat really ready for extended passages takes time. You could easily use up a great deal of time and extra money
and spares to make ready for the passage
back. Since you are a stranger in another country and you know no one you are not at the same advantage as you would be in your home port where you know people well and can get a lot of good advice and friends to help out. This also adds a lot of time to your process.
There are also the formalities and paper work required to purchase
and title the boat on top of the search process. Depending on the Island you purchase
it from you will have greater or lessor amounts of paperwork to handle. All this takes time even if it all goes smoothly.
The cheapest sail boats are probably not up for the trip back to Norway
. I think the suggestion of looking through Yachtworld will at least help you set you expectations on what you can afford and then you need to factor into it the issues required to have a safe passage
back to Norway
. A boat suited to the Caribbean also needs to be suited to your home port too.. There are a lot more cheap
boats that could island hop for 3 months yet not be up for the trip back. A plane ticket could be the cheaper solution to that problem. The refitting for a trans Atlantic passage is not cheaper than a set of plane tickets.