Catamaran for use as sports-boat or leisure-boat, has adapter provided in form of tubular-piece, and floating bodies strapped at bearing, when bodies stand on trailer, which is driven rear-ward in water till catamaran floats in water

The catamaran has an adapter provided in form of a tubular-piece for receiving of mounting parts. The adapter has insertion bolts that are provided with transverse bore-holes for insertion of the bolts into an adapter socket. A cabin is held as a living-or working room between frame tube-T-pieces. The cabin is transported on a trailer, and floating bodies (1) i.e. pontoons, are strapped at a bearing (11), when the floating bodies stand on the trailer, which is driven rear-ward in water till the catamaran floats in the water.