I am pretty sure that is a photo of a Wharram-like catamaran called China Moon. It may also be a photo of Pete and Annie Hill's Wharram-like catamaran that they built several years ago, but I think it is more likely China Moon. You should be able to do some google searches and find both of them.
No, it is not the China Moon of Peter and Annie Hill. This cata"PUFF" has been designed and built by Gary Lepack in 1980. It's after to have read an article about him and his cat in the Junk Rig Association Newsletter N°25 I decided to have so a twin junk rig on our Tiki46.
You can read an article of this boat at : http://www.duckworksmagazine.com/04/s/vintage/multihulls/index.cfm