MIKE WALLER YACHT DESIGN CORAL COVE 31 CATAMARAN
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# See our notes about published weights and displacement figures. CONCEPT The Coral Cove 31 is intended to fit somewhere between the polynesian catamaran concept and more high tech. catamarans. The Coral Cats use absolutely no exotic materials. To keep construction simple and costs low they are designed for all plywood construction, using the proven timber / epoxy construction technique. The Coral cats all feature separate hulls connected by crossbeams. Beams are solidly mounted. Cats can be built as separate hulls to 80% completion, then transported to the water for final assembly. The Coral Cove 31 has a multi chine hull with mini keels and balanced spade rudders for construction simplicity. The cockpit area features a solid floor fitted between the hull inner sides and the two main beams. Auxiliary power is provided by twin outboard motors (9 hp max.) mounted below the cockpit floor, under the seats. RIGS The CC31 is fitted with a modern, medium tech rig, with heavy roach and full battens, and is performance oriented. The main driving force of this rig is the main sail, with the foresail providing a slot effect for efficiency in a similar fashion to dingy rigs. Small overlapping genoas can also be fitted, however for simplicity many builders will choose to sail with non overlapping headsails. The plans allow for either option. The rig may be set up in the normal way, or with lower cost rope lashings in place of expensive turnbuckles. CONSTRUCTION The CC31, like all of the Coral Cats, features a fiberglass sheathed plywood hull shell over a framework of plywood bulkheads and timber longitudinals. This has proven over time and thousands of boats, to be the quickest, cheapest and best alternative for amateur builders on a budget. Absolutely no exotic or expensive materials, such as expensive foams, balsa or carbon fibre, are be used in the construction Crossbeams are box structures in ply and timber. The cockpit floor is in timber and plywood, whilst other deck areas are timber slat on fabricated alloy frames, or netting. ACCOMMODATION The main accommodation has been optimized for a couple or small family rather than going for maximum berths. There is a full size double berth in the port hull, and a single in the starb'd hull. The starb'd dinette can also convert to another full size double. Toilet / shower is in a separate compartment. A good size and workable galley fills the mid section to starboard, whilst to port a small chart area fills this space. There is full headroom throughout the hull accommodation areas and good sitting headroom over berths and dinette. There is full sitting headroom under the covered forward area of the cockpit. At the forward end of the cockpit a small dinette style lounging area provides comfort for sailing, with good shelter provided by the dog box style turret roof. The aft end of the cockpit is open for working the boat.
Mike Waller Yacht Design is a business specialising in boat plans for amateur boat builders. We custom design, and provide stock plans for both monohulls and multihulls, mainly catamarans. Other designs are sailing skiffs and sharpies, as well as power catamarans. Our designs mainly feature timber construction, in plywood or cedar strip plank composite construction, using the W.E.S.T. system (wood epoxy saturation technique). Our designs are intended mainly as cruising boats, although several have done well in racing. |
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