Wich are the top ten yacht builders in the world

Since you didn't specify power or sail, you might want to subscribe to this publication if you are looking for impartial information about sailing yachts. They are extremely reputable in their reviews and accept no advertising revenues. This is serious reading for the serious sailors. Under their links section, they list the top 25 boat builders in the world. www.practical-sailor.com

If its otherwise, then maybe you would want to look into this: www.yachtingmagazine.com

Happy cruising!