Actually, 600 lbs. would be a Rave-and-a-half. The Rave weighs only 400 lbs. For comparison a Melges17 scow which is a foot longer than the Rave and extremely light for it's size with carbon fiber sticks weighs 300 lbs.

The main beam is 5"o.d. made of T6061 aluminum as is the rest of the structure; the same metal found in your everyday jetliner. The entire structure has to be as light as possible but very strong to withstand the high forces on the frame and rig at foiling speeds.

The Rave's foils are retractable so it can be beached.