Tumbleweed is a Valiant 42, hull #133. Great fun to sail, incredibly well built, we love Tumbleweed, and tip our hat to Bob Perry the designer often. The well thought out details and the build quality make for a great home, while the hull design and sailing systems make for a great sailing experience.
The folks over at Blue Water boats have a great write up on Valiant 42s here with all the stats, details, etc:
http://bluewaterboats.org/valiant-42/