Lego Technic: Catamaran (42105) - 100% Complete in Excellent Condition! No Box | eBay
RacingBrick on Twitter: "The LEGO Technic 42105 Catamaran is a quite unique set, the first LEGO Technic boat that actually floats! I had to take it outside to see how it behaves
Review: 42105 Catamaran | Brickset: LEGO set guide and database