Charles-

There have been multiple trimarans based on catamaran hulls for the amas. The most common (that I've seen) is the "Tremolino" that uses Hobie 16 hulls. This was a Dick Newick design. I know there was one that used Tornado hulls (called a "Typhoon" maybe??) and we had one here locally that used Inter 20 hulls (I believe Reynolds out of California designed/built that one). Can't remember offhand one using Hobie 18 hulls but it wouldn't surpise me. Might check in Multihull Magazine- Tends more toward the bigger/cruising multihulls-

Hope that helps!

Sounds like you need a DN too so you can sail year 'round!



Kirt