Cuthbertson and Cassian designed and built 351 hulls of the C&C; 35 in the 1960s and 70s. The Mark I and Mark II series (pre-1975) are usually available in good shape for an average price of $30,000. The Mark II usually rates lower than the Mark I, but depending on local fleet, the Mark I could be either an A- or B-fleet boat. A crew of five or six is required to race the boat, which sails best to its PHRF rating in medium air. If youd prefer not owning a boat with a gasoline engine, youll want to replace the Atomic 4 engine with a diesel, which will cost about $5,000. A new set of racing sails should cost as much as $10,500. A new racing bottom could cost $3,000.