Having been overseas a few times myself I have some idea of just how difficult it is to do a major financial transaction in another culture.
What would make life really good for you is to find a few reliable buyers' brokers, one in each major area. The members of this forum may be able to help in this regard.
Once you have a few prospects lined up fly over and meet the brokers and look at the boats. I am assuming that you have a job that you don't want to leave until the last moment.
Do this a few times and eventually you could end up with a broker
who you trust and who understands what you want.
At some point the stars will mostly align, fly over, pick up the boat
and sail off into the sunset.
It's got to be better than spending a couple of years slaving over a steel
Nothing worse than a distant thunderstorm that makes you close the windows and then only delivers hot humid air.