Who has the oldest,(still functional and active,) catamaran?

Pictures are encouraged!

The winner receives the glory of winning and bragging, and not much else.

Since I'm first, I'll nominate my 1977 Hobie 16. (Pictured to the left, or should I say water-colored to the left.) Since I'm posting this late at night, I should stay in 1st Place for at least a few hours.