Layout & Accommodations
The boat has an enormous interior volume for a cat of this size. Headroom is over 6' 6". She has berths to accommodate eight people. Her light and modem interior finish, all in pastel colors with little trim, creates a cheerful atmosphere below. All cushions and bunks are dressed with attractive colored wear-resistant fabric. The cabin soles have light beige carpets. The boat has four cabins of which three have private showers with heads. All showers and the galley have 115-volt receptacles.

Port hull (bow to stem) Doublewide V-berth with large stowing underneath, hanging locker, bench-seat and vanity table, opening hatch and inner-side window. This cabin has a shower with hot and cold water, hand washbasin and electric head. In the center of the hull is a four-step companion-way, which leads onto the bridge deck saloon. The wet locker for foul weather gear is to port on top of the holding tank. The aft cabin has a king size double berth, with drawer shelves, hanging locker, vanity-table, and it's own shower and electric head. Aft of this cabin is the engine room and steering gear.

Starboard hull (bow to stem) Doublewide V-berth with large stowing under hanging locker, vanity table, side shelves, opening hatch and inner side window. Also, this cabin has its own shower with hot and cold water, head and sink. The galley is equipped with a Force Ten three burner stove/oven, compressor driven Danfoss BD35F 12 volt refrigeration, two working areas, sink, drawers and cupboards. Again a four-step companion-way to reach onto the bridge deck saloon. The aft-cabin is the crew quarter with, hanging-locker, vanity table and seating area. Under these seats, in each hull, is a 125-liter refrigerator. Aft of this cabin is the engine room and the steering gear.

Bridgedeck
The saloon entrance consists of a wide, tinted glass sliding door. The cockpit-saloon bulkhead is double-walled, and incorporates many electrical wires, hydraulic hoses and wheel-pumps for the steering system. Athwart ship to port is a large dining-table with comfortable U-shaped seating for six with a huge lazarette storage area underneath. To starboard is the navigation center with a good-sized chart-table and seat. The almost half round saloon-windows give an excellent panorama. Forward and sideways of the furniture is a lot of counter space. Stereo and TV/Radio is built-in.

Ventilation is better than good, provided by seven hatches and 12 opening side windows. Furthermore, in each cabin is a Hella electric fan. These many openings provide a tremendous amount of airflow through the hulls, three openings to each cabin. The engine room has its own natural build-in ventilation.

Please see the floor plan drawing for a better idea of how the boat is laid out.

Electronics & Navigation
The autopilot a SUVIRAD AP20, is hooked-up to a hydraulic steering system and controlled by J300X electronic-box. Its electric pump, RPU160 activates two hydraulic cylinders. 
The fluxgate compass RFC35 is mounted in the center of the boat, underneath the entrance step of the saloon.
GPS and RADAR are located at the nav-center. The radar is an RA772UA, true-motion, 3D, 2KW,LCD, Anritsu. with Parabolic-Radome-Scanner.
Navigator GPS4900, 8 channel parallel with kalman-filter and D-GPS ready.
Transducers for depth and speed are located under the galley floorboard.
ISO15 Simrad for Wind and Tack are flush-mounted on the cockpit bulkhead.
Combi instrument is in the nav-center, which is also the radio-station
Icom 150 Watt SSB.
Icom  25 Watt VHF.
There is a second back-up Autopilot CPT, mounted on the port steering wheel.
Stereo/CD system for below, saloon and cockpit speakers.

Mechanical & Electrical
Two Yanmar-saildrive diesels of 27 HP each, with variable Vari-props (I 6"x 13 "), give her a cruising speed of seven to eight knots. The Vari-props are excellent solid German design, no folding - they swing the three blades in a horizontal position, absolutely no drag under sail. Twin engines provide exceptional maneuverability; the boat can spin in her own length easily.

All wiring is marine grade and tinned. 
Four Prevailer heavy-duty 135-amp.house batteries and two 55-amp. starting batteries. 
The DC-panel has 24-volt lighted circuit breaker/switches. 
A digital amp meter, voltmeter and battery bank manager; monitor amp/hour consumption, and amps remaining, solar input, battery voltage, etc. 
Battery charging at dock and anchor is performed completely by solar panels, or from the two 80-amp alternators. 
The four 55-watt solar panels supply the bulk of the energy needed, and are controlled by a Trace regulator. 
There are a total of 25 lights in the cabins, showers, saloon and cockpit. The navigational lights are a three-colored masthead mount with emergency strobe. 
The foredeck light is just below the steaming light. 12-volt outlets on each steering station, nav-center and galley. 
Each head has 115-volt outlets well as in the galley. 
Hella-fans are in all cabins and one in the galley. 
The ships 12V to 115V inverter is a 1000watt Freedom Jazz.

Pressurized hot and cold water in all showers and galley sink. Exception is the deck-shower on the aft walkway. Each hull has a central collection sump with incorporated bilge-pump for overboard-discharge of gray-water. Tow-more bilge pumps are situated in each engine room, behind the watertight bulkheads. The port hull has one big holding tank for the two electric heads, a "Y" valve allows direct overboard discharge or to use a pump out facility. The starboard head is a hand operated "Lavac" direct overboard discharge, only to be used outside the restricted limits. There is a total of 400 gallons of water in two tanks, which are situated in the aft part of the forward bridge-deck just before the main bulkhead. This immense amount of water is convenient at anchor and long stays in port. Under sail, to lighten the boat, only half a tank is currently carried and topped off daily by the onboard watermaker which is a Spectra 380 liter per day model.

Deck & Hulls
This cat has an extension of the bowsprit, on which she carries a fixed Profurl-system to fly a reacher or asymmetric spinnaker. The trampoline is a solid web-like netting on which the crew has excellent foothold to carry out the anchor maneuvers. Each bow has a sail-locker with a big access hatch for stowing fenders, ropes, sails etc. Four more hatches are on the forward bridgedeck. The center two hatches are for stowing the anchor gear, the starboard one for stowing the propane tanks and the port one for general gear. There are two more hatches above the forward cabins and showers, the engine access hatch is right on the stem of each hull. On her starboard side is the only dagger board trunk with rollers for the vertically retracting dagger board. The up and down control lines are led to the cockpit. The stem finishes with a solid deck (fish deck) on which the two stainless steel davits for the dinghy are mounted. On top of the davits are four solar panels of 55 watt each.

Immediately forward of the mast, but aft of the nets is the large self-draining anchor/chain locker and electric windlass of 1000 watts. It has a Bosch motor with double gear. In case of electrical failure the windlass can be hand operated. Anchor chain is 10 mm (3/8) BBB hot dip galvanized chain. The primary anchor is a German invented (buegel anchor of 45lbs.), the secondary is a Delta 44lbs,and both anchors are hot-dip galvanized. The emergency anchor is a stainless dismountable with variable flukes, 35lbs fisherman type. The anchors are deployed over custom anchor rollers on the forward crossbeam. The remote windlass foot-switch allows operation for single-handed anchor maneuvers.

The cockpit is huge and provides room for sunbathing, lounging and dining on a folding table. There is a very large cockpit locker under the back seat. The engine controls are on the star-board side, easy to reach while the helmsman stands upright. Dual steering stations are mounted to the saloon bulkhead and the steering system is hydraulic. On the same bulkhead are the instruments like, the AP20 (Simrad) Autopilot; wind, depth and speed. Also on each station is a magnetic steering compass. The saloon entrance is by a full glass sliding door, which is crash and waterproof. Port side of this door is a big window. The mainsheet is lead to a winch on port side of the cockpit coaming, providing control of the main from the port steering station. A fixed bimini with a clear window in it's front, gives some shade in the tropics. There is a removable dodger, which is zipped to the bimini roof providing more protection at anchor. The starboard steering station sports a captain’s chair. A second spare Autopilot is mounted on the port side of the cockpit.

CONSTRUCTION
The hulls are hand laid-up in a female mold and vacuum bagged with woven bi-axial and uni-directional glass, sandwiched with selective Kevlar and carbon reinforcement. The hulls up to the waterline are cored with Airex closed cell foam. Divinycell is used for the top-sides, the decks, and saloon roof. The former resists impact better, and the latter resists malformation from heating by the sun. This is very important as this yacht was built to spend all of her time in the tropics. ISO polyester resin is used throughout and the underwater hull is finished with three layers of tar epoxy prior to painting to resist any osmosis reaction. As mentioned above, a layer of Kevlar lines both hulls below the waterline to resist puncture from impact. The "chain plates" are of 316 stainless, through bolted to the interior bulkhead and bonded to it, with several layers of unidirectional glass. The Forward lifting eyes are integral. They are made of several strips of fiberglass, wound around a stainless steel triangle then integrated into the deck. The crossbeam is a 10 cm round aluminum spar with a 60 cm long riveted sleeve in its center, on which the dolphin-striker and the plate for the fore stay is welded. The short bowsprit carries a Profurl roller reefing system for the reacher, and so does the fore-stay for the Genoa. All bulkheads, furniture, tanks, fixtures and shelves are foam cored, contributing to the boat's overall lightness, and great strength. The foam core provides great sound and temperature insulation. In addition, the foam core construction creates total positive flotation. The boat cannot sink. There are forward crash bulkheads in each bow and watertight bulkheads aft. Even if the boat took on water from below the waterline, she would not sink, since the total construction is lighter than water. All surfaces outside are finished in white linear polyurethane paint. The accent trim on each side of the hulls is Royal Blue. The inside surface is a washable polyester paint with a very fine texture. The furniture shows a veneer trim on drawers and cabinet doors. The galley floors are covered in teak/holly veneer. The rest of all floors are in beige carpets. There are no exterior wood surfaces to maintain. She has a total of twelve opening port-lights in the hulls and twelve hatch covers on deck, of which six are opening hatches; two on top of the saloon roof. This amount of ventilation provides a comfortable environment in the tropics.

Sails & Rig  
RIG:
The mast is an Alum Profilserie M2 50x 159 (mm), height is 17 meters with double diamonds and a jumper strut at the top of the fractional forestay. The spreaders are swept aft by 12 degrees. She has three head stays, two on a Profurl system and one baby-stay for the storm jib. No running backstays, but two shrouds on each side. Lower and upper shrouds end on the same chain plate. The boom; an Aluspar 160x I 20(mm) Profurl. Its length is 5.5 meters. The SSB radio antenna is a 26-foot whip, mounted on the stem to starboard.

SAILS:
All sails are built by H.Herschel Mast and Sailmaker. They are of good quality Dacron. 
The mainsail; with six full battens and three reef points is 61 square meters of Dacron, with a weight of 400 g/sqm. 
There is a one-part halyard for hoisting. 
The reacher is a light half-winder of 76 sq.mt. @180 g/sqm on a fixed roller system. 
A Roller Reefing Genoa of 44 sq.mt. @ 360 g/sq.mt, and a strong jib of 11 sq.mt.@ 400 g/sq.mt.   
Her big power is a Spinnaker of 135 sq.mt. @ 33 g/sqm.    
All sails have UV protection and sail covers. All batt-cars and intermediary batt-slides are made by FREDERMEN. The traveler car and traveler track are from LEWMAR and can be controlled by an endless rope hauler. The seven winches on board are self-tailing and made by Antal Italy. Two #60, two #52, two #46, and the reef winch is a  #40. The storm jib is stowed with sheets permanently attached in the fore hatch. It is easily hanked on to the baby-stay without removing other sails.

SAIL CONTROL
There are five halyards, two aft and three forward. All are low stretch polyester. The main halyard is 1: 1 purchase. The second serves as topping lift and spare main halyard. Forward halyards are for jib, Genoa and reacher or spinnaker. There are two self-tailing halyard winches on the mast. One for the halyards and a smaller one for the three reefing lines of the main. The Lamar main sail traveler is 12 feet tong, with a Lewmar car. Mainsheet purchase is a 4:1, single ended, leading to a winch on the aft cockpit coaming. A permanent boom brake is rigged to avoid fast accidental jibing. The Genoa and reacher furling lines are also led to the cockpit as well as the control line of the dagger board. The Genoa sheets and jib sheets are led over the Genoa track and turning block to two self-tailing # 65 winches; which are mounted on each lateral end of the saloon roof.

Other
There is a 13’ Hard bottomed inflatable dinghy with an aluminum bottom rather than fiberglass for lighter weight and more strength. This dinghy carries a 15HP outboard.

John Shuttleworth is world-renowned for his ocean racing and cruising multihulls. Extensive experience in engineering and computer modeling enable him to design the lightweight yet enormously strong construction that performance multihulls demand nowadays.

The "ADVANTAGE 44", originally designed in 1989, has been redesigned in 1999, to achieve a remarkable combination of performance, live-aboard comfort, very strong construction and beautiful lines. The most important fact is; the boat is unsinkable. The evolution of multihull design in the last 15 years is amazing and well documented in many articles published by the designer himself and others in the sailing world.

The typical Shuttleworth hull has a significant flare (the knuckle) so that, as the hull is pressed down at the end of a surfing wave, the buoyancy increases dramatically. However, low wetted surface area is maintained in most sea conditions and will sustain high performance. Also with this flare, the hull creates remarkable interior volume for a catamaran of this length. The under-water shape is a fine “V" at the entry and gradually broadens out to a "U" shape aft. The rocker is perfect and will avoid the terrible "Hobby-Horsing effect”. The use of a single foil oversized dagger-board, in her starboard side only, allows more interior living space in her port hull.

Comments
At the time of this writing (04/01), this yacht is only about nine months old. She has been sailed across Atlantic to take up residence by her builder/owner in the sunny Caribbean Sea. She is actively for sail so that the restless owner can go back to Europe to build another. The person who buys this vessel is getting a comfortable, performance oriented personal boat, that will sail FAST and safely through any conditions she encounters.

This cat is a modern design. Double-digit speeds are common. Even when loaded for cruising, she still will be light compared to other cats of her size. With her tall rig and a combination of four head sails, she out sails almost any other cruising cat. In the lightest air when others motor, she still ghosts along. This is a very satisfying aspect of her sailing qualities. Tacking is a joy, especially without running backstays. She comes about with ease.