The builder doesn't spec it, so I need to go and tape some weights to strings at waterline, then measure between the strings. Easy to do because the boat's on the hard. Based on my experience with multihulls, the narrow hulls make it a lot easier to move through the water and conventional rules about hull speed don't apply to hulls with high LWL:BWL ratios.

Without measuring I would guess the center hull is about 5.5 feet BWL and the amas (floats) are 1.5 feet BWL each with a depth of 1 ft while motoring without sails (one slightly out of the water and the other about 1.5 ft when reaching). The floats are canoe shaped and hardly leave a ripple. Here's the other info. In the diagram below, it's possible that the innermost dotted line marks the waterline, so if you could import that into a CAD program you could measure between them and extrapolate approximate BWL measurements. I'm going to the boat tomorrow and will try to take actual measurements.

LOA 39.4 feet, LWL 36.75 feet (center hull) (amas are about 1 foot shorter)
Draft excluding CB 2.46 ft
Draft with CB 6.5 ft
Estimated displacement, full crew, tanks and gear 14,000 pounds (12,500 full tanks and sail but without crew and gear)

Engine Volvo Penta MD22p rated 59 hp
trans MS25A-A. 2.74 ratio (stamped HURTH MARINE)
Volvo Penta 3-blade folding prop 19"D x 16" pitch