A guy called Geof Holt sailed a Challenger around britain this year.Quite a feat.
They are good boats. designed by the late Rod Macalpine-Downey I think and manufctured by a few different companies over the years.
Yes it has a centerboard.
Tacking a multihull is easy as long as you remember that you need to be sailing to windward properly first - don't just throw in a tack off of a reach like you can do on a mono-maran
WHERE WILL YOU BE SAILING KEITH?

paul