Superior 54 Catamaran

The primary design goal was to develop an attractive and fast cat with large accommodations incorporating a conventional mid-ships deck house. As seen in the accommodation plan, the deck house is devoted to the galley, navigation station and lounging areas. There is a maximum of 6'8" headroom within the deckhouse which tapers to about 6' around the edges. Large windows are located all around the perimeter of the cabin so it will always have an open feel. (To prevent excessive heat build up, all of the laminates are cored with insulating materials. And a new type of tempered glass is used which resists infrared radiation without using reflective coatings is being used.)

The galley is large by any standard. Located in the center of the boat it is subject to the least amount of roll and pitch in a seaway. With excellent visibility to the horizon and easy access to the action in the cockpit the galley slave will enjoy his task much more. There is a room enough for just about any stove and oven plenty of locker and counter space, a 10 cu/ft refrigerator/freezer and double sink.

In the forward end of the deckhouse is a large table with wrap-around seating. Windows at eye level provide a panoramic view and ventilation is excellent.

Down below, the combined area of the two hulls provide a great deal of room for completely private cabins. Because of the amount of space available, several different accommodation layouts could be successfully used. But the standard layout utilizes the entire starboard hull as a single master cabin and the port hull for two double guest cabins.

Headroom in the hulls varies from but is generally 6'2" or more (another 2" can be gained by adjusting the sole heights). Natural light and ventilation is plentiful through numerous deck hatches and ports. In addition the wingdeck lockers are designed to function as huge dorade boxes, scooping up fresh air and delivering it to the hulls without the rain or spray.

Aft of the deck house is a lounging cockpit. With a table this makes a great place for meals in warm weather, and a sheltered place to sit while sailing. However, to get good visibility for the helmsman there is a "sailing cockpit" recessed into the aft wall of the deckhouse. This is 3 steps up from the floor of the aft cockpit and provides excellent visibility all around. All sail controls are led to this cockpit for trouble free shorthanded sailing.

A substantial dinghy, or hard bottom inflatable, can be stowed beneath the net deck, aft of the cockpit. Quickly hoisted into this position, the dinghy is tucked up behind the aft crossbeam and out of the way.

Transom boarding platforms are built in to both hulls. These allow simple access to and from the dinghy or the water and in conjunction with a fresh water shower head make a perfect place to rinse off after a swim.

Hull shape

The hulls are reasonably slender for a cruising cat with a length to beam ratio of 12.5/1. While the shape is symmetrical below the waterline there is some advantage to asymmetry in the topsides and this was utilized in two places. The first is the flair built into the hull forward on the outboard side only. This was done in order to knock down spray and to provide dynamic lift should the bow be immersed deeply. It also allows a fine hull entry while still having enough buoyancy forward. Also the inboard hull side has been pulled inward toward the cabin so that it facilitates getting from the cabin to the hulls without the need to widen the deckhouse. By stretching the hull in this way the beam of the deck house could be reduced by 2 feet, which improves both the performance and appearance of this design.

To insure the ability to claw upwind in a blow, twin daggerboards are employed. In the full down position the boat draws 7'. With boards up the draft is reduced to less than 3'. The daggerboards are built in conjunction with small deadwood "bumper fins". The bumper fins serve to reinforce the dagger trunks where they exit the hull and protect the props and rudders from damage in a grounding. To intrude as little as possible into the cabin, the dagger trunks are canted outboard.

The rudders are the highly efficient balanced spade type, located under the hull where they will not suffer from ventilation at high speed. The rudder post is a very stout carbon fiber/epoxy shaft. Not only does this save weight over a metal shaft but it is considerably stronger. Steering gear can be cable and sheave or hydraulic. Hydraulic is often preferred since it is easier to link 2 rudders to multiple steering stations and effective autopilots through hydraulic tubing which can be led anywhere in the boat rather than cable, which must take a fairly direct route.

The standard engine arrangement is for twin diesels with "V" drives and feathering props. Separate engine compartments are located aft of the rear crossbeam. Noise, smell and vibration are largely prevented from entering the cabin. There is excellent access to all parts of the engine for service. There are several engine options but the most attractive are the Volvo 2003T (44 hp) and the Yanmar 3JH2-T (47 hp). Both of these turbocharged engines are reasonably light and they will power this boat at 11 knots maximum. Standard fuel tank capacity is enough for 800 nm range at 8 knots. Standard construction is strip plank composite. The hulls utilize western red cedar core and uni-directional S-glass/epoxy skins. The wing deck and cabin is composed of DuraKore with hybrid glass/carbon skins. Selective reinforcement with uni-carbon fiber is used in the crossbeams and other components. The entire design could also be constructed in foam cored composite, please call for details.

Please call Chris White for current price and delivery information at 508-636-6111.