The current issue of Professional Boat Builder (number 132, Aug/Sept 2011) has a very interesting article on Walt Walters which covers the original design of the 16 and how it was stretched into the 18. Also goes into other designs he did for Don Arronow and his ongoing relationship with Jim Wynne. Wynne is credited with inventing the stern drive which he licensed to Volvo. Interesting history of early offshore racing in the article also. Ed