Hi,
Depends on, what kind of jobs have to be done...
Sorry, I am very familiar with commercial fleet repairs / conversions / docks, but not with yachting ... yet.
But, You can ask:
www.shiptech.fi
They are representatives of different yards worldwide.
Or, You can get Your own directory of repairing organisations worldwide (book + CD) on:
www.selvig.no
I hope, this will be useful for You,
Best regards,
Andrei