Cosmos 1100

Home-built from plans or kit

Brand:: Schionning

Designed by:: Schionning Designs

Description:

The Cosmos 1100 is a performance cruiser, big enough for any ocean voyage, yet small enough to be very easily handled with a crew of two. With her light, slim hulls she can sail fast, and strip planked in cedar or Durakore, she is a viable project for home builders.

The most popular layout for the new design [in 2004] will probably be the three cabin configuration, with two double cabins forward on the bridgedeck and one double cabin aft in the starboard hull. Additional single bunks can be fitted into the bows.

The saloon has all round vision with opening hatches forward for good ventilation.

Building the Cosmos range
Plans for the Cosmos range of performance cruising catamarans are available for home builders and professional boat yards. The boats are strip planked in either Durakore (manufactured compound planks with a balsa wood core) or Western Red Cedar. With this method of construction the compound curves of the hulls and decks can be relatively easily accurately formed and building requires only a moderate level of skill and no complex or expensive tools. The result is a sleek looking, strong and light boat. Western Red Cedar is cheaper and a little easier to use but Durakore planking is about 30% lighter because of the significant weight saving in the core. The construction with Durakore gives a very high strength to weight ratio and will produces a lighter boat allowing either a little more performance perhaps for club racing, or a better payload for cruising.

Hulls are built separately upside down on temporary building frames. After being planked, the hulls are sealed with epoxy resin and glass, then turned by hand for sealing inside.

Type:: Performance cruiser

Multihull type:: Catamaran

Construction:

Strip planked in Western Red Cedar (cheaper and easier), or Durakore (lighter)
Balsa cored bulkheads
Sealed with epoxy resin and glass
Composite forward beam with striker

Sails and rigging:

Fractional sloop rig
Fully battened main
Fixed or rotating mast
Roller furling genoa
Asymmetric spinnaker flown from the bowsprit

Sails and rigging images:

Deck layout and gear:

Flat decks with non-slip surface
Targa bar carries solar panels and aerials, and lifts and carries a dinghy
Wheel steering
Aft anchoring setup
Main sheet traveller track on the cockpit seatback

Keels, boards and rudders:

Kick-up rudders mounted in the bottom step of the transoms
Daggerboards

Accommodation:: Port hull: Head and shower compartment aft; navigation area midships; double berth forward; optional single berth in the bow
Bridgedeck cabin: Saloon with dinette
Starboard hull: Double cabin aft; galley midships; double berth forward; optional single berth in the bow