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12 of the coolest multihull superyachts

The market for multi-hull superyachts has skyrocketed in recent years as owners begin to favour the high volumes and superlative stability on offer. Once the novelty of a small group of owners, a recent slew of multi-hull concepts and the success of shipyards such as Sunreef has confirmed that two and three-hulled superyachts are well and truly on the up. We remember some of the most ground-breaking multi-hull launches...

White Rabbit

One of the coolest launches of 2018, the 84 metre White Rabbit is the largest trimaran in the world. She was built in fibreglass by Australian Yard Echo Yachts with exterior design by Sam Sorgiovanni and naval architecture by One2Three. White Rabbit was delivered to an experienced owner who owns a number of other multihull superyachts, including a 51 metre shadow catamaran, also built by Echo Yachts, which will be used as a support vessel; for the 84 metre trimaran.

More about this yacht

Inspired by Game of Thrones, the 66 metre shadow catamaran Hodor is a support vessel used to carry all the toys and tenders for her mothership. The vessel is fully custom and was designed by Incat Crowther. Hodor boasts five tenders, including a 17 metre chase boat and a 388 Skater powerboat with a top speed of 165 knots. Other toys include nine Jet Skis, two Yamaha ATCs, four Yamaha TW200 trail motorcycles and a three-person submarine.

A true icon,  Adastra was launched in 2012 by Australian yard McConaghy Yachts . With a length of 42.5 metres and a sleek Kevlar and GRP exterior, this space-age design is every bit as out-of-this-world as its name suggests. Made for exploring, an impressive 10,000 nautical mile range means she can cross the Atlantic twice before needing to refuel. A shallow draft of 1.2 metres allows her to access hard to reach anchorages and shallow bays too.

In 2011,  Hemisphere was launched as world’s largest sailing catamaran with an LOA of 44.2 metres - and she remains so to this day. Built for American owners who had previously chartered a catamaran in the Caribbean, this British yacht was a bespoke project by Pendennis . Fully kitted out for diving, Hemisphere ’s port hull contains a dive centre capable of refilling both air and Nitrox tanks.

Yachts for charter

Royal falcon one.

The 41.4 metre Royal Falcon One is a quirky catamaran launched in 2019. She was designed by Singapore-based Royal Falcon Fleet in collaboration with F.A Porsche Design Studio and built in Sweden by Kockums. Accommodation is for up to 10 guests in five spacious cabins, including a full beam master suite with its own private deck space. Crew are housed in the two hulls.

Yachts for sale

Pilar rossi.

Formula One racing legend Nelson Piquet’s yacht Pilar Rossi was built in Turkey as a modest 33 metre Alucraft motor yacht. But his uncle, a Brazilian naval architect, helped Piquet convert her into a 64 metre sailing trimaran by adding outriggers and two masts. The reborn trimaran can accommodate up to 18 guests.

Launched in 2004, this Chinese catamaran from Pride Mega Yachts may look like a vision of the future, but the inspiration for Asean Lady is actually ancient. The twin hulled 88.15 metre yacht is based on the proa design that has been used for more than 2,000 years to build fishing boats in the Pacific region. Her stability was put to the test in December 2004 when she survived the Indian Ocean tsunami while moored off Phuket.

Flexibility is the key word that informed the design of the 33.7 metre  Quaranta . Launched at Turkish yard Logos Marine in 2013, this catamaran superyacht features the kind of interior volume more commonly associated with a 40 metre yacht. All six guest suites are located on the main deck and the absence of structural bulkheads means that they can easily be reconfigured. This innovative system helped Quaranta to win the catamaran award at the 2014 World Superyacht Awards .

Popular among commercial buyers, SWATH (Small Waterplane Area Twin Hull) designs are becoming increasingly sought-after by private clients due to their internal space and sea keeping abilities. The most prominent example of this is the Abeking & Rasmussen designed Nurja (formerly Silver Cloud ) , a 40.54 metre SWATH that was launched in 2008. The torpedo-shaped submerged hulls contain the engines and as a result the vibration levels on board are significantly reduced.

This 27.43 metre catamaran was first launched in 2004 as a fishing vessel, before being refitted in 2015 by Ocean Voyager and relaunched under the name Rogue . Sold in June 2018 she was renamed Basilisk . Ideal for long cruises, she boasts a maximum range of 7,000 nautical miles at 12 knots, while the eight-tonne deck crane means that all manner of superyacht water toys can be stored aboard.

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Yachting Monthly

• Digital edition

Best multihulls: We pick the best two and three hulled yachts

• Rupert Holmes
• June 29, 2022

Rupert Holmes picks the best multihulls for cruising focussing on the most popular and interesting mid-size multihulls from 37-43ft

Few of us can have failed to see the rapid growth of interest in multihulls and this formerly niche sector is now a mainstream part of the new boat market.

Much of the appeal is obvious and is unchanged from the reasons for the popularity of Prout and other catamarans in the 1970s and 1980s, including spacious single-level living spaces offering great views. Today’s boats are also characterised by expansive outdoor seating and entertaining areas. These areas benefit from the near-universal adoption of the same fabric technology that enables motor yachts to leave cockpit cushions outside in all weathers.

Superior space

The full forward cockpit featured on a number of heavier and larger designs may appear to be a gimmick at first sight, yet they are practical in a number of ways. Firstly, a separate area can be ideal when sailing with larger complements of people on board – teenagers for instance may value a separate area. Other popular attributes include the amount of stowage on deck – ideal for those who want to carry a lot of watersports equipment.

In addition to decent cockpit lockers, you can expect to find a pair of deep lockers at the front of the bridge deck, plus further stowage in the bows. On boats above 42ft these areas are often large enough for conversion to single cabins, although it’s worth remembering that putting too much weight forward will compromise performance and the motion of the boat at sea.

Easy handling both under sail and power is an equally important theme. Twin engines make a cat easy to spin in its own length and handling in reverse is as easy as going ahead. This set-up also offers a degree of redundancy – if one engine fails you will often be able to reach port using the other one.

In some cases the nav station in the bridge deck saloon is an ideal place from which to con the boat while on watch in inclement conditions, making these boats as good as a conventional motor sailor in this respect, but with the potential for much better sailing performance. However, some designs lack the all-round visibility to make this feasible.

The International Multihull Show, which takes place in April at La Grande Motte, France, is a must for anyone serious about buying a new or recent boat. Although the show has a compact feel, it’s the only place in the world where dozens of multihulls of the same size can be compared side by side.

The impact of COVID

The British brokers I met at the show were universal about their experience of the UK market, which has changed considerably post Covid.

Their biggest client base for multihulls are now owners with plans for long-distance cruising. The increase in people working from home is also attracting a younger clientele than typical boat buyers, which is helping boost demand to unprecedented levels.

‘We’re seeing a big change in the way people are buying boats and what they’re looking for,’ Graham Laver of Ancasta, Lagoon’s UK agent, told me. ‘Most are not weekend sailors and don’t need a permanent berth – they have a lot more time on their hands.’

A scarcity of suitable berths in parts of the UK is therefore not a hindrance on this part of the market.

The major catamaran builders largely disregarded boats under 40ft for many years; however, there are welcome signs this attitude is changing. The Excess 11, unveiled at the 2020 Düsseldorf boat show, is a 37-footer by a new Groupe Beneteau brand that’s aimed at a younger audience than typical buyers of this value. It’s Excess’ first all-new design – the earlier 12 and 15 were based on the bottom third of Lagoon hulls, although almost everything above the waterline was new.

As with the two older models, there are helm stations aft in each hull, with wheels positioned right above the rudder stocks to produce the most direct feel possible.

The boat also has excellent visibility from the helm and is noticeably better in this respect than most cruising catamarans. Interior accommodation includes a well-proportioned bridge deck, with very generous headroom. There’s space for a decent galley, a full-size internal saloon area and a forward-facing navigation station.

On the downside, it lacks space for the ease of circulation of people seen on some larger boats and will therefore have more of an ‘excuse me’ factor when sailing with a full complement of crew.

Sensibly no attempt has been made to create peninsula beds in the aft cabins, so despite the boat’s relatively modest size both double beds measure a massive 2m by 2m. The huge stowage volumes under the bunks are easily accessed thanks to hinged top panels supported by gas struts, which enables far more of this space to be reached easily than the typical single drawer in the bunk front.

On the three-cabin design the starboard hull is given over to the owner’s suite, which includes a good desk/dressing table area and lots of extra stowage. Perhaps surprisingly, this doesn’t have the feel of living in a narrow tunnel – it’s a wide rectangular area that offers more comfort and practicality than many larger yachts.

Excess is also engaging directly with its client base via the Excess Lab. The online element of this discusses key issues that impact design choices, allowing the boating public to present its views in a way that helps inform development of new models. Recent topics include the balance between draught and windward performance, self-tacking jibs vs genoas, and refrigeration.

Excess 11 specifications

Price: €310,660 ex VAT LOA: 11.42m / 37ft 5in Hull length: 11.33m / 37ft 2in Beam: 6.59m / 21ft 7in Draught: 1.15m / 3ft 9in Displacement: 9,000kg / 19,800lb Builder: excess-catamarans.com

The chances are that if you’ve sailed multihulls of around 40-44ft at least one of them may have been a Lagoon. More than 800 Lagoon 42s have now been delivered, with the model proving equally popular with private and charter owners. It offers lots of space, even by multihull standards, in three- or four-cabin layouts.

Large platforms aft make boarding from a pontoon, quay or tender easy, while the big cockpit has multiple seating areas and plenty of space for easy circulation of people. There’s also a neat lifting system for the dinghy. The boat is sailed from a raised helm position on the port side, which has direct access to the winches. The two-person helm seat is configured to work well both when seated and when standing.

While this ease of sail handling is a key attraction for owners of most cruising- oriented multihulls, a downside of some raised helm stations is they can feel very removed from other people on board.

This can make others on board feel like passengers who are not fully involved in the sailing. Unlike a number of boats of this size, there’s no forward cockpit, but there is foredeck space for sunbeds that forms a separate area for socialising.

Interior bridge deck accommodation includes a decent galley to starboard, plus a generous forward saloon. This has a great view forward and to the sides, although vision is obstructed on both quarters, which limits the usefulness of the forward chart table as a place from which to con the boat when on watch in bad weather.

Even by the today’s standard of catamaran, accommodation in the hulls is very generous. The boat at La Grande Motte had the classic four-cabin, four-bathroom charter layout. Both aft cabins rival those of the owner’s cabin of many 50ft monohulls thanks to big peninsula beds and plentiful stowage. These are also airy and very well lit spaces, with an overhead hatch, big hull window and wide stern window.

Lagoon 42 specifications

Price: €426,600 ex VAT LOA: 12.80m / 42ft 0in Beam: 7.7m / 25ft 3in Draught: 1.25m / 4ft 1in Displacement: 12,100kg / 26,700lb Builder: cata-lagoon.com

The Neel range of trimarans is one of the most eye-catching of modern multihulls. The basic philosophy is hugely appealing – use performance trimaran hull shapes to create a platform for a spacious cruiser, while keeping the boat as simple as possible. Weight is also minimised, but in a practical way that doesn’t resort to eye- wateringly expensive high tech solutions.

I sailed one of the first 43s from La Rochelle last summer and found it a surprisingly rewarding boat to sail, with a feel on the helm akin to that of a monohull, yet it was significantly faster. On a reach in 14 knots of true wind we made a very relaxed 10 knots of boat speed reaching under only mainsail and jib. When the breeze picked up to 16-17 knots we were hitting a consistent, but relaxed, 11.5 knots at a true wind angle of 115º with an asymmetric spinnaker set.

Heel angles are greater than for a catamaran, as lifting the windward ama out of the water is an enormous help in reducing wetted surface area. However, monohull sailors will find the heel very modest and once it reaches 12-14º the boat is rock steady, even in gusts.

The amas of the 43 are too small for accommodation, so this boat has a largely open-plan layout, although the owner’s cabin is in a separate area to starboard on the bridge deck. There’s also a double berth to port that would make an ideal den area for kids, plus a further small double cabin forward at a lower level in the main hull.

A key feature of all Neels is a separate engine room and technical area below the saloon in the main hull, which is ideal for maintenance and fault-finding.

These are often thought to be expensive boats, yet the 43 is priced at a similar level to many other multihulls of this size. It’s perhaps no surprise they are leaving the factory at the rate of one a fortnight.

Neel 43 specifications

Price: €359,000 ex VAT LOA: 12.9m / 42ft 4in Beam: 7.4m / 24ft 3in Draught: 1.5m / 4ft 11in Displacement: 9,000kg / 19,800lb Builder: neel-trimarans.com

Nautitech open 40

This innovative boat set new standards when it was first launched and was a key influence in establishing the DNA of the open concept, with a big indoor/outdoor area aft under a hard top, combined with a smaller saloon forward. The effect is to create a huge outdoor living space that provides shelter from the elements – whether intense sun or rain.

Today’s version still has the original hull shape, marrying this with an updated and restyled deck, plus improved interior design. Twin aft helm stations that provide excellent visibility by multihull standards are also an important element. They also enable easy contact with the rest of the crew while you’re steering and there’s little barrier to stop them pitching in to help with deck work. This is therefore a sailors’ boat, with relatively narrow, easily driven hulls, high bridge deck clearance and deep rudders, even though it has fixed keels and not daggerboards.

Of course the nature of this boat means there’s less space for fully enclosed bridge deck accommodation. Nevertheless, it has a decent galley and in cold weather you can retreat into a cosy forward saloon, which has space for four to six people, plus an optional full-size drop-down dining table that makes a huge day bed. With an almost unobstructed 360° view, this also makes a good spot from which to con the boat in poor weather.

There’s a spacious and bright owner’s cabin in the port hull with a large double bed plus a dressing table/desk area. The starboard hull has a large double cabin aft and smaller one forward, which share a well appointed mid-ships toilet and shower. On some boats fitted out for long-term cruising the forward starboard cabin has been configured as office and/or workshop space.

Other boats in the range include a new 44 Open, which is based on similar principles, but has space for an impressively large galley and more volume in the hulls.

It also has numerous small improvements, including moving the mainsheet traveller from the hard top to the aft beam, which gives more precise sail control.

Nautitech open 40 specifications

Price: £404,795 ex VAT (sail away price) LOA: 11.98m / 39ft 4in Beam: 6.91m / 22ft 8in Draught: 1.35m / 4ft 5 in Displacement: 8,500kg / 18,700lb Builder: nautitechcatamarans.com

Marsaudon composites orc 42

A criticism often levelled at catamarans is that they lack feel on the helm and therefore aren’t fun to sail, but that’s not universally true. Lightweight boats with easily drivenhull shapes can be both quick and rewarding, with little of the noisy turbulence at the transoms and lack of pointing ability that can be associated with overweight models with grand accommodation and inefficient shallow keels.

This is the smallest in a range of three performance catamarans and was originally named the TS42. All three boats have direct tiller steering, combined with comfortable helm seats. They provide a great view of the sail trim, though the coachroof partially obstructs the view to leeward.

Despite offering 20-knot performance and the ability to cross the Atlantic in only 10 days, these boats also have lots of interior space. The 42, for instance, has a big bridge deck saloon, with a surprising large galley, plus an excellent forward-facing navigation station. When the weather dictates, this area is enclosed from the outer cockpit by canvas screens, thereby avoiding the need for heavy sliding doors. Equally, there are no moulded headlinings, though the deckhead can be faired to create a high-gloss finish that doesn’t add weight.

Both aft cabins have big double berths, while further forward the layout is flexible – owners can choose from additional double or Pullman style bunks, extra stowage, or extra-large heads and shower areas.

On the downside, these boats are built in small numbers on a semi-custom basis and lightweight construction, decent sails and quality deck gear are all expensive.

Marsaudon composites orc 42 specifications

Price: €520,000 ex VAT LOA: 13.05m / 42ft 9in Beam: 7.42m / 24ft 4in Draught: (fixed keel version) 1.5m / 4ft 11in Displacement: 6,400kg / 14,100lb Builder: marsaudon-composites.com

Fountaine-Pajot ISLA 40

Although launched last year, this model started life as the Lucia in 2016. However, it benefits from updates including a revised helm station that increases stowage – a move welcomed by many potential buyers looking at a boat for long-term cruising.

It’s raised up on the starboard side, with the wheel next to the halyard and sheet winches, making sail handling a simple matter when on watch alone. Steps up from the helm station give access to the hardtop for handling the mainsail, but there’s no option on this model for sunbeds up there.

There’s a large cockpit aft under the hardtop, with a substantial table on the port side. The foredeck has provision for sunbeds, but not a full forward cockpit. Stowage on deck is more restricted than on Fountaine-Pajot’s larger Astrea 42, but still far exceeds what’s available on most monohulls and includes two big bridge deck lockers, plus further space in the bows of each hull.

Bridgedeck accommodation includes a surprisingly large internal saloon, although this is achieved at the expense of a separate navigation station. The example at the show was a four-cabin, four head boat, but without separate shower stalls. Even so, to achieve this on a 40-footer is an impressive feat.

Both aft cabins have large peninsula beds, although floor space and stowage are reduced in size to give space for the two heads in each hull. Forward cabins have a double bed that tapers significantly at its forward end, but these are still far larger than the triangular forecabin vee berth of many monohulls.

Fountaine-Pajot ISLA 40 specifications

Price: POA LOA: 11.93m / 39ft 2in Beam: 6.63m / 21ft 7in Draught: 1.21m / 4ft 0in Displacement: 9,500kg / 20,900lb Builder: catamarans-fountaine-pajot.com

This 2020 design is another model that’s extremely popular in charter fleets. However, they are also sought after by private buyers and the numbers in the hands of individual owners will of course swell dramatically when they are sold on from charter operators.

As soon as you step on board this cat, it feels like a big boat for its size, with plenty of options for easy circulation of people. There’s arguably more separation between interior and exterior spaces than on many catamarans.

However, the Leopard 42 has a feature that few others offer in this size range. A full height door in the front of the saloon gives direct access to the large forward cockpit, which opens up the accommodation in a different way to most. This is also a semi-flybridge model, with an additional seating area on the hardtop that’s intended for use in port and at anchor.

A huge and very well appointed galley takes up almost half the saloon area and there’s further space under the floor to stow a considerable amount of dry supplies. There’s also a very good forward-facing navigation station/desk, although the internal seating area is relatively small.

The models that feature a three-cabin layout have a very impressive owner’s suite, which includes a large desk/dressing table, plenty of generous stowage and expansive floor space.

The other hull houses two double cabins, each with its own en suite and separate shower stalls. However, the downside of this arrangement is that there’s less scope to provide generous easily accessed stowage in these cabins.

Leopard 42 specifications

Price: POA LOA: 12.67m / 41ft 7in Beam: 7.04m / 23ft 1in Draught: 1.4m / 4ft 7in Displacement: 12,467kg / 27,485lb Builder: leopard catamarans.co.uk

This French yard set a standard by which all multihulls have subsequently been judged when it launched the Bali 4.3 Loft. It blends indoor and outdoor areas into a single vast space that can be closed off with the garage door-style aft bulkhead.

Since then the format has been greatly refined and the 4.2 offers impressively spacious layouts in both charter and owners’ formats. There’s also a full-size door to a spacious forward cockpit, with sunbeds extending the entire length of the solid foredeck.

Bali 4.2 specifications

Price: €424,780 ex VAT LOA: 12.84m / 42ft 1in Beam: 7.07m / 23ft 2in Draught: 1.22m / 4ft 0in Light displacement: 11,400kg / 23,100lb Builder: bali-catamarans.com

Aventura 37

This 20-year-old French-run but Tunisian-based company is one of the few that has actively addressed the market for smaller catamarans. The 37 is a semi-flybridge design with a big aft cockpit. It was launched a few years ago and is aimed at cruisers who want a spacious boat in a relatively compact package.

Nevertheless a key design criteria was an ability to sail at 7 knots in only 10 knots of true wind. The spacious accommodation includes lots of stowage, which includes a small walk-in wardrobe in the owner’s suite on three-cabin boats.

Aventura 37 specifications

Price: €237,500 ex VAT LOA: 10.9m / 35ft 9in Beam: 5.94m / 19ft 6in Draught: 1.2m / 4ft 0in Displacement: 7,900kg / 17,400lb Builder: aventura-catamarans.com

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Are two hulls better than one? If the array of new build and new concept catamarans are anything to go by, it’s a question the yachting industry appears to increasingly be asking.

Celebrity endorsement in the shape of Rafael Nadal has certainly helped raise awareness of the category, but beyond the tennis ace’s custom Sunreef 80 Power , more and more yacht owners are coming to see that cats are worthy of their attention: The twin hull design delivers larger volumes, greater stability, as well as increased efficiency and speed when compared to its monohull equivalent.

Beyond leisure cruising in shallow, tropical waters, today’s class of catamarans are being primed for global expeditions. The category is also shining bright with early prototypes demonstrating how yachting is going green, such as the hydrogen-fuel-cell-powered power-cat tender by America’s Cup team Emirates Team New Zealand.

From classic models to rugged explorers and support vessels to a hydrogen-fuel-cell-powered cat, here are seven stellar twin-hulled vessels that show how versatile the power-catamaran design can be.

Astilleros Armon’s ‘Wayfinder’

The second big cat–following the stealth-like 217.2-foot Hodor–in the Incat Crowther ShadowCat series, Wayfinder launched from Spain’s Astilleros Armon in 2021 as a support vessel to a superyacht. It’s already been spotted in the Mediterranean, dutifully playing its supporting role to the mothership. At 223.8-feet long, and with a 45.9-foot beam, the shadow boat has extra storage space for the mothership, a games room and an outdoor area all rolled into one, with a collection of extra features including a helipad, helicopter hanger, spare parts workshop, medical facilities, a flower room and a pickleball court. There is also space for a main crew of 18, with extra space for 14 supplemental crew or service staff.

Silver Yachts’ ‘SpaceCat’

In October 2022, SpaceCat emerged from Silver Yachts in Fremantle, Western Australia, the first multihull delivery from the Australian yacht builder behind the naval-styled explorer yacht Bold. Like the yard’s monohulls, the superyacht bears the signature of yacht designer Espen Øino who has described the category as the “SUV” of the sea for its potential to first divide opinion and then perhaps dominate the market. A compact 118.1-foot length hides an impressive 4,306 square feet of space across the tri-deck configuration; the largest being the 2,174 square-foot main deck. The series has been designed with owners who may want to own more than one. “The yachts could be positioned on three main continents; one in Asia, one in the Mediterranean, and one in the Caribbean, avoiding any hassle of repositioning and non-availability to use the vessel,” said the shipyard said in a statement at SpaceCat’ s launch.  

Abeking & Rasmussen’s ‘Nurja’

When delivered in 2008, the 134.6-foot Silver Cloud stood out for its amphibian appearance and full-width helipad on the upper deck, but what attracted the most attention was her swath (small waterplane area twin-hulled) design, the first time such a concept had been seen in the superyacht fleet. The owner chose Abeking & Rasmussen for the build for a reason. He was impressed by the German yard’s proven success with the swath platform in its military and commercial builds. He believed the stability would offer an antidote to his wife’s seasickness, an assumption that was proven correct. In December 2020, the yacht changed hands and is now known as Nurja .

Sunreef’s 80 Eco

At last year’s Monaco Yacht Show, the largest yacht may have been Lürssen’s sleek 378-foot motoryacht Ahpo but, across the port, a catamaran less than a quarter of the size was turning just as many heads. With over 1,700 square feet of solar panels seamlessly integrated into her hull, superstructure, mast and bimini roof, the 80-foot Sunreef 80 Eco is a vision of the future, with fully electric propulsion for silent cruising. Along with smart innovations, including a rainwater collection system for washing down the deck and the ability to use her solar panels to heat up the boiler, there’s also plenty of proof that going green doesn’t mean compromising on luxury: The interiors are finished with sustainable materials, including natural fabrics and salvaged teak to reach the exacting standards of superyacht comfort.

Equipped with an electric-hybrid drive system, as well as both solar panels and hydr0-generation technology to top up battery power, the French-built Windelo 50 Adventure can reach both the wilds of Patagonia and the palm trees of the Pacific Islands at minimal cost to the environment. Scratch the surface of its classic catamaran aesthetic for more eco-friendly innovations like a hull constructed from a composite material of basalt and PET foam from recycled plastic bottles. These upcycled materials reduce carbon emissions by almost 50 percent compared to traditional materials. The interiors haven’t been ignored either: It’s a modern, functional design emphasizing sustainably sourced wood. The first of this series earned a special mention for sustainability at the European Yacht of the Year 2022 awards.

Profab Central Engineering’s ‘The Beast’

With its thick gray, geometric stripes that stand out against the endless blue of the South Pacific of its home waters, there’s nothing inconspicuous about The Beast . Delivered in 2019 by New Zealand’s Profab Central Engineering, the 128.7-foot vessel is billed as the ultimate adventure charter yacht, equipped with scuba diving equipment, wakeboards, SUPs, a waterbike and even a 42.7-foot sport fishing vessel called Baby Beast. The twin-hull design adds to its personality, says its charter manager, Ben Osborne from 37South in Auckland, New Zealand. “The extra volume allows The Beast to carry larger tenders and more equipment—setting it up perfectly for exploration—style cruising, while not sacrificing on the interior spaces,” he told Robb Report . The interior is styled like a Manhattan bachelor pad and can sleep 12 guests in five cabins.

Silent 120 Explorer

Proof that 007-style toys are no longer the sole domain of football pitch-sized yachts, the Silent 120 Explorer’s onboard stash includes a U-Boat Worx Nemo submarine and Xcraft eVTOL (electric vertical take-off and landing) aircraft. And, true to sustainable super-spy form, rooftop solar panels slide open to reveal a smartly concealed e-VTOL touch-and-go landing pad. A generous 45.4-foot beam—plus the space saved by its solar and electric propulsion systems—is what makes such cool cruising extras possible on a boat of this size. Another of the new wave of cats designed for carbon-free adventure cruising, this latest project builds on the Austrian company’s previous all-electric launches, such as the Silent 60. The first 120 Explorer is set to hit the water in 2024.

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• Catamarans: Exploring the beauty of twin-hulled boats

Catamarans, with their unique twin-hull design, have gained popularity among boating enthusiasts worldwide. Offering stability, speed, and ample space, catamarans have become a favored choice for sailing, cruising, and even fishing. In this article, we'll delve into the world of catamarans, exploring their features, advantages, and various uses. Whether you're a seasoned sailor or considering purchasing your first boat, join us as we set sail to discover the beauty of catamarans.

Advantages of catamarans

A catamaran is a type of boat characterized by two parallel hulls connected by a deck. This design offers increased stability and reduced drag, allowing for smooth sailing and enhanced performance.

Catamarans offer several advantages over traditional monohull boats. These include:

• Stability: The twin-hull design provides excellent stability, minimizing rocking and rolling even in rough waters.
• Speed: With reduced drag and lighter weight, catamarans are known for their impressive speed and efficiency.
• Spaciousness: The wide beam of a catamaran allows for more interior space, providing comfortable living areas, cabins, and deck space.
• Shallow Draft: Catamarans typically have a shallow draft, making them suitable for cruising in shallow waters and exploring coastlines and coves that are inaccessible to deeper-draft boats.
• Enhanced Safety: The twin-hull configuration offers redundancy and increased buoyancy, making catamarans less prone to capsizing.

Sailing catamarans

Sailing catamarans have gained popularity among sailing enthusiasts for their excellent performance and comfort. With their wide beam and efficient sail plans, they can achieve impressive speeds and provide a stable and enjoyable sailing experience.

Catamaran design and construction

Catamarans are constructed using various materials such as fiberglass, aluminum, or composite materials. They can be custom-built or manufactured by renowned boat builders who specialize in catamaran construction.

Read our top notch articles on topics such as sailing, sailing tips and destinations in our  Magazine.  

Catamaran sses and activities

Catamarans are versatile and can be used for a variety of activities. Some common uses include:

Cruising and liveaboard

Catamarans are well-suited for extended cruising and liveaboard lifestyles, offering spacious accommodations and the ability to carry ample supplies and provisions.

Chartering and tourism

Due to their size and comfort, catamarans are popular for chartering and tourism purposes, providing vacationers with luxurious and memorable experiences on the water.

Catamarans are known for their competitive edge in sailing races. Their speed, stability, and maneuverability make them a favored choice among racing enthusiasts.

Catamarans designed specifically for fishing offer stability, deck space, and specialized equipment, making them ideal for anglers seeking a productive and enjoyable fishing experience.

Small catamarans for recreation

For those looking for smaller recreational options, there are compact catamarans available that are perfect for day sailing, coastal exploring, or simply enjoying leisurely time on the water.

Buying a catamaran: Factors to consider

When purchasing a catamaran, factors such as size, budget, intended use, and maintenance requirements should be taken into account. Conduct thorough research, consider professional advice, and take your time to find the perfect catamaran for your needs.

Catamaran maintenance and care

Proper maintenance is crucial for keeping your catamaran in top condition. Regular cleaning, hull inspections, and routine mechanical checks are essential to ensure the longevity and performance of your boat.

Catamarans offer a unique and captivating boating experience. With their stability, speed, spaciousness, and versatility, they have become a popular choice for sailing enthusiasts, cruisers, and fishermen alike. Whether you're seeking an exciting adventure, a luxurious vacation, or a peaceful coastal exploration, a catamaran can provide the perfect platform to elevate your boating experience.

So what are you waiting for? Take a look at our range of charter boats and head to some of our favourite sailing destinations .

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A Guide to Catamarans: Exploring the Beauty of Twin-Hull Vessels

Catamarans are a fascinating class of vessels that have captured the imagination of sailors and water enthusiasts worldwide. With their distinctive twin-hull design and numerous advantages, catamarans have become increasingly popular in recent years. Whether you’re a seasoned sailor or a novice to the world of boating, this guide will introduce you to the allure of catamarans and help you navigate your way through these remarkable vessels.

Understanding Catamarans: The Basics

1. Twin-Hull Design: At the heart of every catamaran is its twin-hull design. Two parallel hulls provide stability and buoyancy. This design offers several advantages, including reduced rolling motion, increased deck space, and shallower draft, making them suitable for various water environments.

2. Stability: Catamarans are renowned for their exceptional stability. The wide-set hulls offer a solid platform, reducing the tendency to heel (tilt) in strong winds or rough seas. This stability is a key reason catamarans are favored by those who are prone to seasickness.

3. Speed and Fuel Efficiency: The dual-hull design creates less drag, allowing catamarans to achieve impressive speeds and superior fuel economy. The reduced water displacement means they can be faster and more fuel efficient than monohull vessels of the same size. This speed and fuel efficiency makes catamarans ideal for both leisure cruising and competitive racing.

4. Deck Space: Catamarans provide ample deck space, which is perfect for fishing, sunbathing, or just relaxing. The absence of a central keel and a tapered bow enables you to make the most of the deck space, often with a seamless connection between indoor and outdoor areas.

Types of Catamarans

Catamarans come in various shapes and sizes, each designed for specific purposes. Here are some common types:

1. Sailing Catamarans: These are designed primarily for sailing, offering the joy of wind-powered navigation. Sailing catamarans often have spacious living areas and are great for extended cruising.

2. Power Catamarans: Power catamarans are equipped with engines for those who prefer motor-driven propulsion. They are known for their efficiency, stability, and relatively shallow draft, making them suitable for a variety of applications, from fishing to luxury charters.

3. Cruising Catamarans: These are designed for long journeys, often with comfortable living quarters, kitchens, and spacious cabins. Cruising catamarans are popular for people looking to explore coastal and offshore destinations.

4. Racing Catamarans: These are built for speed and competitive racing. They have sleek designs, lightweight construction, and advanced rigging systems, making them the choice for adrenaline enthusiasts.

Advantages of Catamarans

1. Stability: Catamarans offer excellent stability both at anchor and underway. This stability is a key reason families and novice sailors often opt for catamarans.

2. Spacious Interiors: Catamarans provide ample living space, with multiple cabins, saloons, and kitchens. The wide beam allows for a comfortable and roomy interior.

3. Reduced Draft: Catamarans have a shallow draft, allowing them to access shallower waters, hidden coves, and secluded anchorages that might be off-limits to deeper-draft monohull boats.

4. Maneuverability: Catamarans can execute tight turns with precision, making them easier to dock and navigate in marinas.

5. Safety: Thanks to their buoyancy and stability, catamarans are less prone to capsizing, making them a safer choice, especially for families.

Challenges of Catamarans

1. Maintenance: Catamarans often have more complex systems due to their twin engines and two hulls, which can result in increased maintenance requirements.

2. Cost: Catamarans are generally more expensive than monohull boats of similar size and age.

3. Docking Space: The wider beam of catamarans can require wider slips in marinas, which may limit docking options in some locations.

Sailing the Seas in Style

Catamarans offer a unique and exciting way to explore the world’s oceans, rivers, and lakes. Their stability, speed, and spaciousness make them an excellent choice for a wide range of water-based activities, from leisurely cruising to competitive racing. Whether you’re looking for a family-friendly vessel, a luxurious yacht, or a thrilling racing machine, catamarans have something to offer every sailor and water enthusiast. So, if you’re ready to set sail in style and comfort, consider exploring the world of catamarans and discovering the beauty of twin-hull vessels.

As you embark on your journey of discovering the world of catamarans, remember that Tideline Fishing Catamarans stands out as a shining example of excellence in this industry. With their dedication to crafting high-performance, quality vessels that seamlessly blend classic aesthetics with modern innovation, Tideline has redefined the fishing experience for anglers worldwide. If you’re intrigued by the idea of a fishing catamaran that offers exceptional comfort and seaworthiness, check out our website to explore a range of customizable models. The horizon awaits, and with Tideline Boats, your adventure is bound to be unforgettable.

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What is a Catamaran? The World of Twin-Hulled Boats

• 14 April 2023
• 5 minute read

Alice Martin

Share the post "What is a Catamaran? The World of Twin-Hulled Boats"

Welcome aboard our nautical adventure as we look into what a catamaran is. If you’ve ever been interested by these twin-hulled vessels and wondered what sets them apart from other boats, you’re in the right place! In this post, we’ll explore their unique features and why they’re becoming an increasingly popular choice among sailors. We’ll also touch on the environmental benefits of chartering one, the science behind their stability. Lastly, we’ll provide you with a calendar of must-attend regattas and festivals. With summer approaching and boats ready to book with Click&Boat , let’s set sail and explore the world of twin-hulled boats!

What is a catamaran?

It is a type of multi-hulled boat, with two parallel hulls of equal size, also known as pontoon boats. This unique double-hulled design originated from traditional fishing boats and sailing vessels in the South Pacific and offers a range of benefits for sailors. They are available in various sizes and can be powered by sails or engines, making them extremely versatile.

Different types of catamarans

Catamarans come in different shapes and sizes, each offering unique features and benefits. Cruising catamarans are designed for leisurely sailing, with spacious cabins and amenities. Racing catamarans, are built for speed and performance, with lightweight construction and streamlined design. Power catamarans are perfect for those who want the speed of a motorboat with the stability of a catamaran. Finally, ferry catamarans are larger vessels designed for commercial use, with the ability to carry passengers and vehicles.

Catamaran vs. Monohull: The Great Sailing Debate

The debate between catamarans and monohulls is popular in the sailing community, with both types of vessels offering unique advantages and disadvantages. Let’s explore some of the key differences between these sailing boats.

• Speed: Generally, they have a speed advantage over Monohulls. This is thanks to their reduced water resistance and lighter construction. The top speeds can be up to 60 knots. This power of catamarans is particularly appealing for those interested in racing or covering long distances quickly.
• Space and comfort: Typically they provide more living space and bridge deck than Monohulls. This makes them an attractive choice for families, groups, or long-term cruisers who value comfort and room for onboard activities. Monohulls, while more compact, can still be cosy and offer a more intimate sailing experience.
• Draft and access: They have a shallower draft than Monohulls, allowing them to navigate and anchor in more shallow waters. This can open up a wider range of cruising destinations and reduce the risk of damaging sensitive marine habitats. Monohulls, on the other hand, are limited to deeper waters and marinas.
• Manoeuvrability: Many sailing enthusiasts consider Monohulls easier to steer than catamarans, particularly in tight spaces or crowded marinas. Catamarans, while still agile, require more skill and practice to steer confidently.
• Maintenance and costs: Catamarans are more expensive to purchase and maintain due to their larger size and the need for two engines or sets of sails. Monohulls, while potentially cheaper, can still be expensive depending on their age, condition, and equipment.
• Sailing characteristics : Monohulls offer a more traditional sailing experience, with the boat heeling and responding more dramatically to wind and waves. This can be exhilarating for some sailors, while others may prefer the more level, stable ride of a catamaran.

The Science of Catamaran Stability

The stability is a result of its unique design, which offers several advantages over traditional monohulled boats. Let’s explore some of these!

• Wide beam: This is the distance between its two hulls, provides a stable platform that resists rolling and heeling (tipping) when underway. This means that catamarans are less likely to capsize and provide a smoother ride for passengers in rough conditions.
• Distribution of weight: The twin-hull design allows for a more even distribution of weight across the vessel. This reduces the boat’s center of gravity and makes it more resistant to capsizing, especially in comparison to monohulled boats with a narrower hull and a higher center of gravity.
• Buoyancy and displacement: Each hull has its own buoyancy and displacement, which contributes to the vessel’s overall stability. This means that even if one hull were to become compromised, the other hull would still provide sufficient buoyancy to keep the boat afloat.
• Damping effect: The wide beam of a catamaran also provides a damping effect on the motion of the boat. This means that when the boat encounters waves or wakes, the movement is less abrupt and more gradual, resulting in a smoother and more comfortable ride for passengers.

The environmental benefits of sailing a catamaran

Calling all eco-conscious sailors! Did you know that catamarans are not only fast and comfortable but also offer numerous environmental advantages? Here’s why these boats are becoming more popular amongst sailing enthusiasts.

The boat design translates to less water resistance and energy consumption, making them a greener choice for those mindful of their carbon footprint. Their shallow draft allows you to navigate shallow waters without harming marine habitats like coral reefs and seagrass beds, with minimal environmental impact. Modern boats often accommodate solar panels and wind generators, allowing you to harness clean, renewable energy for guilt-free sailing. Some manufacturers are also turning to sustainable, recyclable materials to lessen the environmental impact of boat production. Click&Boat offers various eco friendly options for those who prefer more sustainable sailing.

Catamaran Regattas and Festivals: A Calendar of Must-Attend Events 2023

It’s time to finish with a list of the must- attend events of 2023! Here are our top recommendations.

Les Voiles de St Barths Richard Mille 16-22 April

With 1,200 sailing enthusiasts and 63 boats, this race takes place over 5 days on difficult coastal routes in the town of Gustavia .

Giorgio Armani Superyacht Regatta 6-10 June

If you are looking for a more glamorous event, this is the one for you. This prestigious event takes place over 4 days off the coast of Sardinia.

Round Texel Race 10 June

This Dutch event is the world’s largest catamaran race, with hundreds of competitors sailing around the island of Texel in the North Sea.

Cannes Yachting Festival 12-17 September

This event is a must-attend for both yachting enthusiasts in Cannes . This show will be one of the top yacht exhibitions in Europe, drawing in around 700 boats annually including luxury catamarans.

So now that you’re up to speed on everything catamaran, it’s time to set sail into the sunset!

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Abeking & Rasmussen’s 63 metre SWATH yacht

By Adrian Prisca

Updated on August 31, 2017

Here’s a 63.4 meter long fabulous Swath (Small Waterplane Area Twin Hull) superyacht design penned down, developed and built by Abeking & Rasmussen (A&R) alongside Reymond Langton Design. At the base of the Swath concept lies a pair of torpedo-shaped submarine hulls which both lie under the water surface, permanently. The two are tied to the yacht via two narrow struts.

An interesting fact about this superyacht is that the cross-section region at the surface of the sea is around a sixth of a comparable size superyacht, therefore only a small part of the ship is actually exposed to the lifting forces exerted by the waves, while 5 sixths of the flotation is bore by the submarine hulls.

This allows even those suffering from seasickness to get onboard the superyacht, as, due to the reduced contact area between the ocean and the hull, Swath superyachts are dramatically less affected by the motion of the sea – physicists call this lower vertical acceleration.

The beam of the yacht further increases its stability, which results in being almost double the one of a traditional yacht of this massive size. The beam alone measures 24.5 meters in length, allowing for almost palatial interiors. A disadvantage of the yacht is that its twin hulls come with no interior guest space, but this is compensated by the huge space on the decks above.

The main deck houses four double cabins, lined up in the bow of the yacht and ending with a fore facing private balcony. A fifth double cabin can be found behind the fore cabins, which, even though it doesn’t boast with such exceptional luxury, still features breathtaking views through expansive windows. In addition, the main deck also provides a lavish gym and an entrance lobby, also usable as a secondary saloon, in case the standard levels of accommodation get surpassed.

The area which on regular yachts serves as the main deck, here consists of a central galley and accommodation for the crew, fully separated from the guest areas. The dining area and the main saloon will be located on the bridge deck, both opening up towards a massive aft guest deck, tied to the superyacht’s private helipad.

Furthermore, the owner will be gifted with his own private deck above the bridge, including a fore-facing cabin, private saloon aft alongside his and hers bathrooms. The highest deck of the boat, the sundeck, boasts with a lounge area, sunpads and a magnificent Jacuzzi.

[SuperYachtTimes]

About Adrian Prisca

Founder of Luxatic and countless other projects, Adrian has shaped this website into a go-to source for discerning readers looking for the latest in luxury products and experiences. He has over 15 years of experience in creating, managing and publishing lifestyle content across numerous platforms and he’s considered a leading voice in the luxury industry. Learn more about Luxatic's Editorial Process .

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Multi-Hull Power Boat

Multi-hull powerboats are generally referred to as “power catamarans” because most of these designs ride on two h ulls . You may find a power trimaran with three hulls, but they’re rare. Technically, pontoon boats , which are open deck boats built on twin metal flotation tubes are also multi-hull powerboats and pontoon boats with three tubes are called “tri-toons”. 

Power cats have become extremely popular in recent years for multiple reasons: they offer more deck and cabin space than a monohull powerboat of the same length, they tend to be more fuel efficient since they don’t drag heavy ballast through the water, they’re very maneuverable since their engines are set wide apart eliminating the need for a bow thruster (a propeller that provides side thrust and therefore maneuvering control), they’re very stable at rest so you can get a good night’s sleep in a rolly anchorage, and often people feel less seasick on multi-hulls because they have a different motion on rough water.

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Activities with Multi-Hull Powerboats

GREAT FOR Saltwater Fishing  • Day Cruising

What you do with a power cat will depend on the brand, size and design of the vessel. Smaller center console cats with an open deck and a steering station in the middle may be perfect for fishing or diving and since they don’t roll, they induce less fatigue throughout the day. 

Larger power cats may be designed to coastal cruise or cross oceans so they’ll have a galley (kitchen), multiple heads (bathrooms) and usually three to four sleeping cabins typically found in the deep hulls. Because power cats are large, stable platforms, they’re an excellent choice for families with small children or older, less mobile passengers. 

Pontoon boats have gained market share recently due to their increasingly better construction and an added tube that makes them more buoyant. They can carry larger engines that make them faster and able to engage in towing sports like wakeboarding and water skiing. Pontoon boats are usually used for family lake boating and entertaining. Their small metal hulls or tubes cannot be accessed like those on cruising power cats.

Ownership Costs of Multi-Hull Powerboats

The size, age, brand, overall design and onboard equipment will dictate the purchase price of a multi-hull powerboat. In addition to the initial price, you’ll need to estimate the cost of outfitting like electronics that are often priced separately. Our Boat Loan Calculator can help you see if the costs of ownership fall within your budget.

Where multi-hulls can get expensive is dockage since many larger models won’t fit into a standard width slip and will require an end tie (usually found at the end of a dock or bulkhead ). These spaces are limited in supply and therefore more costly. Smaller fishing cats and pontoon boats may add the cost of a trailer (but that in turn, may save on dockage fees). Ship’s registration with your state authority or documentation from the U.S. Coast Guard will also add a small fee.

Normal maintenance for all boats includes interior and exterior cleaning, bottom scraping, hull polishing and waxing, and so on. Keep in mind that you’ll be paying these services for basically two boats since there are two hulls. Most larger power cats have redundant systems ( bilge pumps, fresh water pumps, battery banks, engines, etc.) and that provides a backup system if one fails. However, with more equipment comes more general maintenance time as well as repair cost.

Power cats need fuel although their engines are often smaller and therefore cheaper to feed. If the boat is large enough to require paid crew, that will add to the cost of operation as well.

Multi-Hull Power Boat Technology/Materials/Features

Due to advances in construction techniques, today’s multi-hull powerboats are lighter but stronger so they can carry more and go faster and they’ll age better than their predecessors. Large cruising cats will have generators to charge batteries, sophisticated navigation and communications electronics, full galleys, watermakers (desalination equipment) electric toilets and many other comforts of home, which make them ideal for extended cruising.

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Catamarans - high speed and lots of comfort

A catamaran is a boat with two hulls that are parallel to each other and connected in different ways. The name comes from the Tamil language and means "bundle of logs". This design offers high stability on the water and often enables higher speeds than conventional monohull boats. Catamarans are built in different sizes and for different purposes, for example as small beach catamarans, large and comfortable cruising catamarans or fast sports catamarans. They are particularly popular because of their speed and stability, but also their comfort.

Catamarans - more than just two hulls

A catamaran is a special type of boat characterised by two hulls arranged parallel to each other. This distinctive feature gives the catamaran a number of advantages over conventional monohull boats. Firstly, the twin-hull construction offers increased stability. When sailing, catamarans have significantly less lean (heel) than monohull yachts and are also less prone to rolling in waves. Because of these significantly smoother sailing characteristics, the risk of becoming seasick is usually lower on catamarans than on monohulls.

Catamarans are often more efficient than conventional boats. Due to their lower water resistance, they require less energy to move through the water. For motorised catamarans, this can lead to lower fuel costs.

Different types of catamarans

Catamarans differ in size and intended use. A distinction is made between, among others

• Cruising catamarans
• Regatta catamarans

The cruising catamaran - when the centre of life is on the water

Both cruising sailing catamarans and motorised catamarans are designed so that the crew can live on them. They usually have the berths and wet cells for the crew in the hulls. Depending on the size and type of boat, the cabins are very spacious. In many cases, they are larger and more comfortable than on the classic sailing boat . The wider platform connecting the two hulls provides more space for passengers or equipment.

The superstructure between the two hulls usually accommodates the steering position and the Navigation corner . There is also a light-flooded saloon and a galley, the pantry.

Another advantage of cruising catamarans is their shallower draught compared to monohulls. They have no centreboards or keels, if they have flat stub keels at all. They can therefore also sail in shallower water or enter shallow bays.

Regatta catamarans - sailing in a different way

Regatta catamarans are characterised above all by their high speeds. However, a distinction must be made between small beach catamarans or sports catamarans for sheltered waters and ocean-going catamarans.

Beach and sports catamarans

The former are also known as beach cats and are specially designed for use near the coast and on shallow water. They are characterised by their lightness, which makes them easy to transport and allows them to be launched and landed directly from the beach. Their construction is generally simple, without cabins or other heavy equipment, which also contributes to their low weight.

Because of their lightness, beach catamarans can reach very high speeds. They are often equipped with centreboards to prevent drifting, one in each hull. These can be raised. The rudder blades can also usually be folded up, allowing these catamarans to be sailed directly onto the beach.

Despite their lightness and speed, beach catamarans offer good stability and are less prone to tipping than small dinghies, for example. This is why some people find it easier to learn to sail on a catamaran than on a monohull. However, the important feeling for tilting a boat is less strongly conveyed on a catamaran than on a dinghy.

Some well-known models of beach catamarans are the Hobie Cat 16 and the Nacra 17. These boats are popular for recreational sailing and racing.

Ocean-going catamarans

They are characterised above all by their high speeds. They are almost completely devoid of comfort, which makes them extremely lightweight. These catamarans also have no keel, which makes them even lighter than monohulls. However, like all catamarans, they can also capsize. If this happens, ocean-going catamarans, unlike beach catamarans, cannot be righted again without outside help.

Trimarans - one more hull for more speed

Like the catamaran, the trimaran is a multihull. High speeds are its trademark. In contrast to the catamaran, the trimaran has three hulls. The three hulls are arranged parallel to each other. The centre hull is almost always larger and wider than the two outer hulls, also known as floats. In principle, a trimaran is something like a very narrow yacht that rests on the floats to prevent it from tipping over.

A distinction must also be made between cruising trimarans and high-performance trimarans. In cruising trimarans, the hull is extended and accommodates cabins and the cockpit. Overall, however, this centre hull offers significantly less comfort than a comparably sized monohull yacht due to its narrow width.

High-performance trimarans, on the other hand, dispense with comfort altogether. They achieve their high speeds thanks to the favourable ratio of sail area to hull resistance.

Catamaran details

Most catamarans are equipped with sails that are also common on monohulls, Mainsail and genoa. The mainsail is often fully battened and has a very large sail area.

Catamarans have a double rudder, i.e. one rudder at the stern of each hull. On beach catamarans, the two tiller rudders on the rudder heads are connected to each other via a tie rod. The long tiller boom is then attached to the centre of the track rod. On larger cruising catamarans, the rudders are connected to each other via cables that are led to the steering wheel. This allows both rudders to be operated simultaneously.

Beach catamarans are often equipped with a trapeze or even two trapezes. The trapeze is a wire on each side that is attached to the top of the mast. A crew member can then use a harness with a hook to attach themselves to the wire and stand with their feet on the outside of the hull. This brings the crew's weight further outwards and counteracts heeling.

Catamarans - stability is important

The stability of a catamaran is based on its width. Unlike monohulls, where the heeling force from the sails is countered by a keel as a counterweight, catamarans use a different principle.

Due to the large transverse distance between the respective empty hull and the sails, the empty hull generates a high righting moment with a very effective lever. In addition, the windward hull acts as a kind of counterweight. Put simply, the buoyancy of the empty hull acts upwards and the weight of the windward hull downwards. Both forces provide the necessary counter-pressure to the pressure from the sails.

The greater the distance between the two hulls, the more effectively the principle works. Modern racing catamarans are therefore almost as wide as they are long. For cruising catamarans, however, space in the harbour and the design are limiting factors.

This is another reason why cruising catamarans like to anchor in bays.

Modern materials for modern boats

Different materials are used in the construction of catamarans depending on their intended use. Cruising catamarans from large-scale production are made from GRP, as are monohull yachts. There are cost reasons for this. GRP is the most favourable material for the desired properties.

The sportier the concept becomes, whether for a beach cat or a large sports catamaran, the higher the quality of the materials used, such as carbon fibre or aramid. The aim is to keep the weight as low as possible, as these catamarans focus on sailing performance, whereas cruising catamarans are more concerned with space and comfort.

The equipment of cruising catamarans

There are clear differences in the equipment of cruising catamarans compared to conventional ones Yachts . Due to the large amount of space available, there is more room for installations than on a monohull. For example, the tanks for fresh water and fuel are usually significantly larger than on comparable monohulls. With several hundred litres of fresh water, the crew can remain self-sufficient for longer, while the large fuel reserves allow a large radius of action under engine.

The interiors of cruising catamarans also differ from those of modern yachts. The cabins are located in the respective hulls and are therefore far apart from each other, allowing for greater privacy than on a monohull. The berths are located in the cabins. In addition, each cabin often has its own bathroom with toilet and shower. This turns each cabin into its own little flat.

The saloon and galley, usually located on the platform between the hulls, are more spacious than on monohulls. Depending on the size and price, the other Equipment options . Even air conditioning and heating systems are standard on cruising catamarans in many places.

The best sailing area for the catamaran

Here again, a distinction must be made between a sporty beach cat and a cruising catamaran. Sport catamarans can be sailed in almost any area, be it inland lakes or on the coast. They are not intended for the open sea, although very daring sailors have also sailed the oceans with such catamarans.

Cruising catamarans are mainly used in the Mediterranean and in tropical waters. There, they are characterised by their great self-sufficiency. Cruising catamarans are less suitable for the North Sea or Baltic Sea. However, this has nothing to do with their sailing characteristics, but with the conditions on land. There is usually a lack of suitable berths in the harbours.

The costs are higher than for a monohull

Two hulls, a special superstructure and the fact that catamarans offer more space mean that these special ships have higher acquisition costs, but also higher maintenance costs than a classic sailing yacht. The main factor in the purchase costs is that more material is used due to the larger enclosed space. In addition, more labour hours are required and the equipment is usually more expensive than on a monohull yacht.

Mooring costs are usually higher for a catamaran than for a monohull yacht, as it requires more space in the marina due to its large beam. However, the greater comfort and longer self-sufficiency of a catamaran also means that more time can be spent at anchor. In addition to the shallow draught, which opens up more anchoring options, mooring fees can also be moderate if marinas are frequently avoided.

The larger a catamaran is, the more varied the equipment options become. The price ranges therefore increase with increasing size.

Leading shipyards for the construction of cruising catamarans

There are many renowned shipyards that specialise in building catamarans. Here are five of the leading manufacturers:

• Lagoon: As part of the Beneteau Group, Lagoon is a French manufacturer known for its wide range of catamarans.
• Fountaine Pajot: also based in France and also with a wide range of products.
• Catana Group: Catamarans for different requirements are built under the brand names Bali Catamarans and Catana Catamarans
• Leopard Catamarans: Leopard Catamarans, manufactured by the South African shipyard Robertson and Caine.
• Sunreef Yachts: This Polish shipyard is known for its customised luxury catamarans.

Buying a new or used catamaran?

When purchasing a catamaran, it is important to consider whether a new purchase should be made or whether a replacement should be made. used catamaran is purchased. Size, condition and equipment are important criteria for this.

If you are buying second-hand, it is always worth having a specialist at your side to inspect and assess the technical equipment and overall condition. If you buy from a specialist dealer, you can be sure that they are bound by a warranty. The probability of making a bad purchase there is lower than with offers from private sellers.

Charter a catamaran - these requirements must be met

Similar to motor yachts, houseboats and sailing boats, it is possible to charter a catamaran. And worldwide.

A Boat licence is required for cruising catamarans if the catamaran is to be skippered. If this is not available, a skipper can be booked with many providers.

Small beach cats can also be hired almost anywhere on the coast and usually do not require a licence. However, many hire companies require a certificate of competence, such as a DSV catamaran licence. However, you can usually obtain a licence from such providers by completing a sailing course.

Many package holiday providers also offer beach catamarans as part of a club holiday. It is often possible to obtain a licence.

The costs of chartering a catamaran

Sailing is an expensive passion. This also applies to chartering. The cost of a cruising catamaran varies depending on its size, equipment and length. Even the season plays a decisive role. Between 1,500 and 8,000 euros per week are quite possible for a catamaran in the charter sector, but also considerably more. Added to this are the deposit, mooring fees, catering, fuel, cleaning and much more. Costs are particularly high in the high season.

However, as a cruising catamaran offers plenty of space and comfort, it can usually be sailed with more crew than a comparable monohull. This means that the charter costs are spread over more people.

Which areas are worth chartering a catamaran?

Of particular interest in Europe are the countries Croatia , Greece , France , Italy and Spain . From a global perspective, the Caribbean a very popular sailing area with catamarans.

Lagoon 43 Volume is key - even on a catamaran

Maximum volume thanks to new hull shapes for more living comfort below deck. The new Lagoon 43 is set to redefine the standards for cruising catamarans with a hull length of 14 metres

Leopard 42 Catamaran surprises with good sailing characteristics in the test

Polarising designs Ugly or awesome? Trimaran Hanstaiger X1

YACHT test of the HH 44 Offshore catamaran with the wow factor

Tricat 20 Smart jack-of-all-trades with an eye for the essentials in the test

Multihull sails More speed and fun on rough courses

Catamarans and trimarans The multihull novelties of the year

Fountaine Pajot Athena 38 as a used boat Agile and solid cat thanks to good genes

Bali 5.8 New standards in terms of space and living space

Fountaine Pajot Isla 40 test Further development of a bestseller

Dragonfly 40 Fast now even faster

Astus 26.5 Versatile, flexible and trailerable

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Twin-hulled yacht (9)

I believe the answer is:

(Other definitions for catamaran that I've seen before include "Two-hulled boat" , "Boat with twin, parallel hulls" , "Twin-hulled vessel" , "One vessel" , "Vessel with twin hulls" .)

Twin Vee's all-new 2025 GFX2 lineup is ready for takeoff.

The best riding boat just got smarter ., intelligent design that's out of this world., experience a new frontier from your next-gen gfx2.

Intelligent options.

Make your expedition effortless with high-tech upgrades..

Navigation Plus

A smarter way to travel. Featuring radar, night vision, and autopilot with a single forward-facing camera.

Thermal Vision Go

Detect hidden hazards like rocks or jetties with a sleekly mounted FLIR camera.

Fish Find Plus

Out-smart fish with new side-scanning and transom sonars. Zero in on your target and maximize each cast.

Geo-Positioning Motor and Anchor

Hands-free boat positioning, for focus on fishing with an integrated Rhodan GPS Anchor +® Trolling Motor's dynamic tracking and position stability.

All-new features launching this summer.

Take command

The high-tech helm has been reimagined to navigate expeditions with ease.

• Digital switching system controls onboard electrical and electronic systems—lighting, navigation lights, horns, entertainment, and security systems—together with a phone app to fit your system
• Single 24” all-glass Raymarine® touchscreen interface
• Hard-top with LED lighting, speakers, nav lights, cameras, and light bars, all integrated into the digital switching system
• Tempered glass windshield for durable visibility
• D-shaped, light and sturdy anodized aluminum top frame with powder coating options
• Electric or electric-hydraulic steering (to fit your chosen motor package)

White = 160 miles of round trip range

Grey = 220 miles of round trip range

Venture to new heights

Power up with top-choice engines and go farther than ever.

• 400 HP max – your choice of Yamaha, Mercury or Suzuki
• Increased fuel capacity (191 gallons for the 260 GFX2)
• Increased range of up to 30%*
• Protect your ship with industry-leading 12-year hull warranty for 2025 GFX2 models

*Range estimated based on optimal cruising conditions and speed.

Explore in comfort

Refined seating and conveniences make your voyage more comfortable for every passenger.

• Premium marine upholstery with luxury sport stitch patterns
• Bow seating with removable forward-facing backrests
• Convenient freshwater porcelain head with overboard discharge (for GFX2 280 and up models)

Fish to the outer limits

Take your journey to big water and big fish with new features designed for every type of angler.

• Redesigned tackle centers with convenient storage and work space
• Tournament-ready, re-circulating livewells
• Lighter, stronger carbon fiber fish box lids with friction hinges
• Optional side and transom sonar packages
• Optional geo-positioning motor and anchor

Prepare for takeoff. All-new model year 2025.

Build Your Twin Vee

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Hull and Deck

• (2) 475 Quart Coffin Box Tubs with Raised Stainless Steel Insert
• (2) 700 Quart In Floor Fish Boxes with Macerators
• 10” Stainless Steel Pull-up Cleats – (6)
• 360 – Degree Walk Around Fishability
• Above Deck Live Wells
• Anchor Locker with Fender storage
• Bilge Access Thru Mechanical Room Hatches in Cockpit
• Cup holders: Stainless Steel (10)
• Drain covers: stainless steel w/Twin Vee Logo
• Electric Reel Outlets (4)
• Folding Transom Dive Ladder
• Foldout Tackle and Gear Storage Port and Starboard
• Fuel Cells “Florida Marine Tanks” 375 Gallon each x Fuel Level Sensors
• Gel Coat Colors: Ice Blue, Seafoam, Whisper Gray or White
• Grip Tek – yacht-style non-skid 
• Integrated Digital Switching System
• LED Courtesy lights throughout, Blue 
• Lewmar Stainless VX2 GO 700w Windlass
• Pop Up 3 ½” Fender Cleats (6)
• Rear Facing Tackle Station with Drawers
• Resin Infusion Construction for all Fiberglass Parts w/ Carbon Fiber support for strength
• Rod holders: (20) Stainless Steel – 10 per side Gunwale & (8) on Aluminum T-Top connect piece
• Rod Holders: Aluminum transom mounted “Euro” rod holders 10 total (5) each port/stbd
• Rub Rail: Thick Flexible rub rail with insert, white or black
• Stainless Marine Outboard Brackets
• Stainless Steel Bow and Stern Tow Eyes – (3)
• Stainless Steel Bow Roller
• Starboard Side Tuna/Dive Door
• Tension hinges: Stainless and Brass
• Thru hulls: Stainless Steel
• Transom Swim/Fish/Sun platform 
• Twin Vee logos, Model Designator logo 
• Under Gunwale Rod Racks Port and Starboard
• Underwater LED lights 
• Upper Bow Storage with Molded Fiberglass Hatches
• Wash down: Raw water washdown, stern

Console, Helm & T-Top Features

• 3 Bank battery charger
• 3 Spoke Polished Stainless Steering Wheel w/ Turning Knob
• ABYC Standard Fire extinguisher
• Acrylic Dash Panel w/ extra-large surface area for electronics
• AGM Sealed Batteries 
• All Digital Switch panel: Gloss Black Panel push buttons [blue LED lights/red in use], USB, and 12v receptacle with circuit breaker protection
• Battery selector with on/off switches (2)
• Console Accessory Storage with USB Ports
• Electric Marine Horn
• Freshwater Marine Head with Macerator
• Fully Enclosed Tempered and Tinted Glass Windshield
• Ritchie Voyager Compass
• Seastar All Electric Steering 
• White Powder Coated Aluminum Doors Port/Starboard

T-top Features

• Aluminum Powder Coat Gloss/Textured (White or Black)
• Electric motorized anchor light/electric antenna mount
• Flood/Search Light Bar LED, forward & aft, 10,000+ lumens- independently switched
• Integrated Powder Coated Aluminum T-top system, flush mounted onto the console
• LED Cockpit and Compartment Accent Lighting Throughout
• Molded Fiberglass Hardtop w/ Radio Box and Rocket Launchers 
• Motorized Anchor and Antenna Mount 316 Stainless Steel Hardware 
• Spreader Lights with 360 Degree Lighting

Livewells, Pumps & Storage

• “Hooker” Live well Sea Chest with Variable Speed Pumps 
• 2000 GPH Bilge Pumps with “Ultra Safety” Bilge Switch (4)
• Coffin insulated storage/fish boxes – forward-facing/upholstered chaise lounge seating
• Freshwater Washdown in Bow
• Raw Water Washdown Pump
• Twin transom live wells (45gal), (1 ea.) port & stbd

Seating and Upholstery

• Bow Storage, Insulated and Dry, with Hatches, Friction Hinges
• Entertainment Center Stainless Steel Sink with Bait Prep and Freshwater Washdown
• Forward Facing Console Lounge Seating
• Premium Triple Captain Helm Chairs with Second Row Seating 
• Premium GG Schmitt aft seating w/ polished stainless-steel port/stbd

40′ 0″

12′ 0″

FUEL CAPACITY

750 Gallons

DRY WEIGHT w/ Engines

COG from Bow

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SWATH (Small Waterplane Area Twin Hull)

Cape Horn Engineering have proudly worked with Naiad Dynamics, ship motion control experts, on the CFD design optimisation for the stabilisation fins to improve the longitudinal stability of the Service Operation Vessel (SOV).

Recently launched at the CEMRE shipyard in Turkey, ‘Groene Wind’ is chartered to Siemens Gamesa Renewable Energy for the maintenance of offshore wind farms in Belgium. This is the first DP2, twin-hulled SOV in the world and the first to serve three different wind farm sites. The SWATH provides a stable platform and large, broad decks for offshore crew activities services. The new vessel significantly improves safety, comfort and workability for wind farm technicians – even in the roughest sea conditions.

HULL DESIGN

The 60m twin-hull ship is designed to minimise the hull cross section area at the sea’s surface. The greatest benefit of this is that the waves have much less of an effect on the vessel, so it does not react as much to a heavy sea state. This improved seakeeping characteristics of the SWATH concept means there is a much more stable platform compared to a traditional monohull SOV, useful when approaching wind turbines and for safe crew transfers in waves.  

The bulk of the displacement is located beneath the waves, where it is less affected by wave action. The design of SWATH is considerably more complex due to the structural complexities inherent to the design. With high surface drag, yet low wave drag, the SWATH is less susceptible to wave motion, but more sensitive to payload, which affects the pitch and the draught.

FUEL EFFICIENCY

The vessels second generation Dynamic Positioning (DP2) technology means that the vessel can hold its position in rough seas but at the same time operate with lower fuel consumption when compared to traditional SOVs. An impressive fuel consumption reduction of up to 50% can be achieved compared to a monohull SOV, further reducing the cost of wind farm maintenance. In line with her green credentials, environmental considerations are integral to the vessel design and include a waste heat recovery system and a Clean Design notation.

CFD Analysis

SWATH vessels are known for their inherent low longitudinal stability. They have the tendency of trimming bow down at maximum speed. To overcome this issue, the vessel was fitted with Naiad Dynamics’s stabilisation system – a pair of stabiliser fins mounted on the inner sides of both hulls, a short distance aft of the bow thrusters. The effects of the tunnels on the flow into the fins and thus the ability of them to perform properly and efficiently were a cause for concern.

CFD performance analysis were run for the whole vessel, including the rudders and fins, with the aim to achieve a better understanding of the correlation between rotating the fins, and regulating the SWATH’s trim. The analysis was performed over the range of operating speeds.

There were two main questions to be answered during the analysis of the SWATH; Firstly, are the installed fins capable of maintaining level trim while sailing at maximum speed, Secondly, which angle attacks give neutral lift for a range of boat speeds.

Simulation Setup

The simulations were carried out following Cape Horn Engineering’s best practices at full scale with 2 Degrees-Of-Freedom (sinkage and trim), free surface deformation, viscous and turbulent flow. We use the best in market CFD code STAR-CCM+ by Siemens PLM. The simulations are run on a High Performance Computing (HPC) cluster, the mesh used had around 5 million cells so each simulation took about XXX hours to run until converged.

Results for level trim at 12 knots

One of the investigations was to determine which fin angle would allow to achieve a 0 degree trim while sailing at 12 knots of boats speed.

The first step was to run a simulation of the model using the static centre of gravity with 12 knots of boat speed and the fin at 0 degree. This simulation showed the vessel to have a trim of -2 degrees, with approximately 20 kN of downward force generated by one fin. To reduce the bow down behaviour, the fin was rotated to a positive angle of attack (AoA) to produce more upward lift. Thus an iterative process was initiated, using linear interpolation to obtain the next best guess. This process reached a value for level trim having the fin at a moderate 7.8 deg.

Results for neutral lift

In the same manner as to find the angle of attack for level trim at 12 knots, an iterative method combined with linear interpolation was used to find the fin angles that produced zero lifting force at a rate of speeds. Run speeds of 8, 10 and 12 knots were completed first, from observations of these results, a better initial guess were used for the runs of 9 and 11 knots. The previous simulations with an AoA of zero were also considered.

While processing the simulations, linear and polynomial trends were observed for the Lift and the Trim at each speed. From these, it was possible to interpolate values for a more complete dataset. The aims of these interpolations being to provide a more detailed set of values, for Naiad Dynamic to be able to set-up the control system of the fins. A useful way of presenting the results is to link Lift generated with Trim, Fin angle and Boat speed.

Investigations on the effects of the bow thruster tunnels on the performance of the stabiliser fins

A simulation was run to see to what extent the bow thruster tunnel being just in front of the fin impacted its performance. It was decided that the simulation would be run at the maximum speed of 12 knots, as this is where any effect would be most noticeable. The fin was set-up at 7.8 degrees, which according to the previous analysis correspond to level trim when the tunnels are open. Several elements were observed. First of all, the behaviour of the SWATH was a lot more stable without the open tunnel. The oscillations observed for trim and lift were significantly smaller with the tunnels closed. Moreover, the lift generated was almost 30% larger, thus the fin angle that produced level trim with open tunnels now produced 4.3 degrees of bow up trim.

APPENDIX – Simulation Specifics

The CFD simulations are processed on a High Performance Computing (HPC) cluster running the latest version of the general purpose commercial code STAR-CCM+ by Siemens PLM. The code solves the Reynolds-Averaged Navier-Stokes Equations (RANSE), i.e taking into account viscosity. The k-omega SST turbulence model is applied with an all y+ treatment. An all y+ formulation switches from the traditional wall-function approach to a low Reynolds number approach with a blending function that is a function of the Reynolds number based on wall distance. The water-air interface is taken into account through the Volume Of Fluid modelling technique and the simulation is run in unsteady mode until a steady solution is reached and the forces and moments are converged to a tight tolerance of 0.1% over 200 time steps.

The CFD domain consists of a large box surrounding the vessel with the boundary conditions at least 2 or 3 boat lengths away from the vessel, so that no blockage effect is encountered. The symmetry of the simulation allows us to perform the analysis on half of the geometry to reduce computation effort.

The volume mesh has a resolution of around 5 million cells. They are composed of unstructured trimmed cells, i.e. predominantly hexahedral cells, with refinement prisms close to the body surfaces. The mesh also contains volume refinement zones. These are situated: around the fins to capture its motion relative to the hull; in the bow thruster tunnels to monitor the flow disruption in these areas and at the free surface to capture the waves generated by the SWATH around the hull and fins. These areas are where the flow gradients are the largest and a higher detailed representation of the geometry is required.

The effect of thrust of the propellers is considered in the trim attitude of the SWATH by applying a force in the direction of the propeller shaft. This force is obtained by considering its horizontal component equal to the computed drag of the vessel during the simulation. This method captures the main trim moment produced by the propulsion and is a good approximation if not enough information on the propeller is available.

Cape Horn Engineering Ltd.

Gatcombe House, Copnor Road, Portsmouth, Hampshire PO3 5EJ United Kingdom

[email protected] +44 (0)7821 717 383

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• Aug 29, 2023

Unlocking New Capabilities with SWATH and Autonomy

Updated: Sep 1, 2023

The Small Waterplane Area Twin Hull (SWATH) design has proven to be a game-changer in maritime transportation, offering capabilities that traditional hull forms cannot match. With its unique characteristics and exceptional stability, SWATH opens up new possibilities for operations in high seas, efficient launch and recovery systems, and enhanced performance in various maritime applications.

One of the key capabilities of SWATH hulls lies in their remarkable stability in challenging sea conditions. Unlike conventional monohull designs, SWATH vessels feature two slender and submerged hulls connected to an above-waterline deck structure via thin struts which are all that is in contact with the water surface. These thin struts, at the waterline, coupled with their submerged hulls farther away from the water surface dampen wave energy, reducing vertical accelerations and providing a smoother ride. This configuration allows SWATH vessels to navigate effectively in high sea states where traditional vessels would struggle. An extreme example of this would be oil rigs.

But why is stability so important?

It’s not just about being able to stay afloat, but staying operational – which is ostensibly the definition of Seakeeping The ability of a SWATH vessel’s ability to maintain data collection in high seas is particularly useful for offshore operations and natural capital assessment, as we still need to gather data in areas that are difficult to survey, with the often perilous North Sea as a perfect example.

With SWATH hull based designs minimising the vertical accelerations and hence slamming effect experienced by monohull vessels in rough seas, they are able to remain operational even in the toughest of conditions, and when this stability is coupled with autonomy, the capacity for continuous collection, no matter the weather.

Below we have identified four capabilities offered by fusing SWATH design with autonomous technology.

1. Precision and Safety: SWATH vessels provide a stable and controlled platform for launching and recovering equipment, such as remotely operated vehicles (ROVs), autonomous underwater vehicles (AUVs) and autonomous surface vessels (ASVs). The reduced motion and superior seakeeping of SWATHs make these operations safer, enabling precise deployment with autonomous systems, and retrieval in challenging sea conditions.

2. Enhanced Workability: With the enhanced operational effectiveness offered by SWATH designs, and the enhanced operation capacities provided by autonomous systems, continuous workflow can be ensured. This capability is particularly valuable in offshore industries where the ability to operate in high sea states is crucial for efficient project execution, from border control to monitoring offshore infrastructure.

3. Increased Speed and Fuel Efficiency: The reduced wave resistance, at operational slow speeds and improved seakeeping of SWATH vessels result in enhanced speed and fuel efficiency. Add to this the removing of humans in the loop, these vessels can maintain their operational speeds even in rough seas, reducing transit times and operational costs, allowing humans to monitor operations at a safe distance.

4. Payload Capacity and Flexibility: The SWATH design plus autonomy allows for a larger deck area, enabling a versatile payload capacity and flexibility. This versatility is particularly valuable for offshore research and survey operations, where the transportation of equipment and supplies is essential.

As the maritime industry continues to evolve, the capabilities provided by SWATH hulls and autonomous solutions will play an increasingly significant role in advancing safety, efficiency, and productivity at sea, paving the way for new frontiers in maritime exploration and transportation.

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