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A QUERY FROM A READER,

CAN YOU HELP?

A quick technical question specifically around twin-engine catamarans.

I’m researching lithium house-bank retrofits and trying to better understand how alternator charging is handled in real-world cat installs.

In a typical twin-engine setup (e.g. 2× 80–120A alternators, shared LiFePO₄ house bank):

Do you run one DC/DC per engine into the same house bank?

What charge current per alternator do you usually allow (30A, 50A, more)?

Do you see alternator heat becoming a concern in long motoring passages?

Do the two charging systems operate completely independently, or is there any coordination between them?

Any experience with BMS disconnect or load-dump type issues in these setups?

I’m exploring a modular DC/DC approach with alternator temperature feedback and optional synchronisation between engines, but before going further I’d really value insight from someone who’s actually installing and servicing these systems.

Pointing me to the right person or a few quick comments would be greatly appreciated.

If you can help please email:  This email address is being protected from spambots. You need JavaScript enabled to view it.

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Multihull World

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Cure Marine and McConaghy Yachts Announce Strategic Joint Venture to Revolutionise Performance Cruising Multihulls

Coolum Beach, Australia – 24th September 2025 – Cure Marine, a leading builder of high-quality performance cruising catamarans, and McConaghy Yachts, a global leader in advanced composite yacht construction, are proud to announce a new strategic joint venture. This partnership combines the brand strength and design philosophy of Cure Marine with the world-class manufacturing and composite expertise of McConaghy Yachts to become a dominant force in the multihull market.

This new alliance will see the production of all Cure Marine vessels move to a dedicated facility within McConaghy Yachts’ state-of-the-art factory in Zhuhai, China. This transition will leverage McConaghy's extensive experience in building some of the world's most iconic racing and cruising yachts, including the America's Cup AC40s, and renowned ocean racers such as Wild Oats XI and Alfa Romeo. "We are incredibly excited about this partnership," said Carl Bird, CEO, Cure Marine. "McConaghy Yachts' unparalleled reputation for innovation and precision in composite construction is the perfect complement to our brand. This joint venture will allow us to push the boundaries of performance and design, delivering the next generation of multihulls where you can go further, faster, and stay longer."

The collaboration will also see the expansion of the Cure Marine lineup with the introduction of two new models, the Cure 48 and the Cure 68, which will join the Cure 55. Both new models will embody the same design and manufacturing philosophy, targeting key market segments with their unique blend of performance and comfort. "Cure Marine has established a reputation for building exceptional performance catamarans, and we are proud to combine our strengths," said Mark Evans, Managing Director, McConaghy. "Our teams share a passion for innovation and excellence. By working together, we are confident that we can set a new global standard for performance cruising multihulls and deliver extraordinary value to clients worldwide."

Cure Marine will be showcasing details and collateral for the new models at the Annapolis Boat Show in early October.

About Cure Marine:

Based in Australia, Cure Marine is a premium boat builder known for its high-quality, lightweight carbon-fiber catamarans. With a focus on performance, safety, and modern design, the company is dedicated to creating an unparalleled cruising experience for its clients. Cure Marine is committed to pioneering advanced manufacturing techniques and innovative design to build the next generation of performance cruising multihulls.

About McConaghy Yachts:

Established in 1967, McConaghy Yachts is a world-renowned builder of high-performance yachts and advanced composite structures. With a rich history of building America’s Cup and world-champion race boats, McConaghy is a leader in composite technology and custom yacht construction. The company's diverse portfolio ranges from record-breaking racing yachts to luxury cruising multihulls, all built to the highest standards of quality and precision.

www.curemarine.com.au

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Cure Marine

Cure Marine, the all carbon builders from the Sunshine Coast have recently unveiled Boat 02

We spoke to Ed Penn, Sales Manager for Cure Marine, who commented;

“The Cure 55 exists because we weren’t satisfied with what the market had to offer. This isn’t just an evolution, it’s a clean break from compromise. With Miyu - Boat 01, we introduced an innovative, lightweight, safe, and fast boat. Building on that success, Ripple brings a new level of maturity and refinement that’s been shaped by the unique needs of her owner.  He came to us seeking a level of personalisation and off-grid capability no other brand could provide. He wanted the freedom to explore remote destinations in total independence. That’s why he chose the Cure 55.”

No doubt, Ripple will make a lasting impression as she journeys across the globe. Meanwhile, Miyu, Boat 01, according to Penn “has already turned heads and earned high praise from everyone who’s sailed on her, including some of the most respected reviewers in the business.”

If you are an adventurer looking to chase distant horizons, or a liveaboard cruiser seeking remote island serenity, the Cure 55 is a worthy suitor.  Revel in the comfort, capability, and confidence to explore off the beaten path.

Press play below to enjoy the stunning first look at Ripple.

www.curemarine.com.au

Contact This email address is being protected from spambots. You need JavaScript enabled to view it. / 0438942873 / (1) Cure Marine - YouTube

Edward Penn - Sales & Client Liaison

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Di Pearson

Entries surpass 100 for 74 Islands Distillery Airlie Beach Race Week

ABRW is paradise for off the beach boats - Andrea Francolini, ABRW pic

As entries breach the century mark, Whitsunday Sailing Club (WSC) is pleased to announce that 74 Islands Distillery has signed up as Naming Rights Sponsor for 2025 Airlie Beach Race Week (ABRW), adding to excitement following the recent announcement of the Whitsundays and Townsville being selected as venues for the Brisbane 2032 Olympic Games Sailing Competition.

Looking down on Whitsunday Sailing Club and local marinas - Andrea Francolini WSC pic

“A local artisan gin and vodka distillery on the Whitsunday coast, 74 Islands Distillery is one our club and competitors can relate to, so it’s a win-win situation for all concerned,” said ABRW Regatta Chairman, Terry Archer, who is also a regular competitor at Race Week, to be held from 7-14 August this year.

On the Olympic Sailing Competition heading their way, Archer said, “We could not be happier. This is an amazing opportunity that will have a major impact on our region. It will have massive benefits not only for sailing, but the whole community as a whole and we are looking forward to welcoming sailors from around the world, along with their families and friends.”

A bonus for sailors and visitors to Airlie Beach - Andrea Francolini, ABRW pic

Whitsunday Sailing Club, which underwent major modifications in recent times, is ideally located. It has run major sailing events in the stunning Whitsundays for years, including its signature event, ABRW which garners up to 200 keelboats and off the beach boats annually. Competitors love the location and the fact that restaurants and accommodation are within walking distance or a five minute car ride away.

From competitors to tourists, it is a dream come true destination, with so many attractions within easy reach.

Conditions are on song for F16s and F18s at ABRW - Shirley Wodson pic

From this year (the 37th edition) on, the event will have a dual purpose, as the Club will use it to gauge  all aspects of what will be required for the Olympics, with the eyes of the world no doubt tuning into the Whitsundays and all it has to offer.

Justin Van Stom is a Townsville local who will race his 11 Metre One Design named Calypso. Van Stom enjoys ABRW and SeaLink Magnetic Island Race Week and is looking at them with different eyes this year.

“How lucky are we be to living and sailing here with both places being Olympic worthy,” states Van Stom who comes from a family of sailors. They are such great places to sail and both have awesome venues. Can you imagine more brilliant places to train for the Olympics?

“Airlie Beach is such a beautiful venue. And Race Week is a fun, friendly event, has great competition and is a great testing ground, because you are up against the best from Australia.

Like Oxygen in form at the Sydney Harbour Regatta - Andrea Francolini pic

“I’m a yacht broker, so the Olympics will also be good for my business. The fact that I will be there when the Sailing Competition at the Games is on is incredible. I’ll be putting my hat in the ring to help out in any way I can,” Van Stom said.

Andrew York (NSW) concurs. He has some incite when it comes sailing at the elite level and the venues chosen. A former Australian Laser champion and reigning Australian Sports Boat champion, York’s dad, Michael York, was selected to represent Australia at the 1968 Games in the 5.5 Metre class, but  unable to get time off from work, the America’s and Admiral’s Cup sailor was replaced by Sir James Hardy.

“I think the Bay (Pioneer) is a very good venue. You could run half a dozen courses there. Airlie already has two marinas, the Club is friendly, and it’s a great place to sail,” says York, who offers this tip: “A guy I ocean raced with has a 16-year-old son, Healy Ryan. He’s an ILCA7 sailor and he’s my pick for selection to the 2032 Games- so yes, I have a vested interest.”

Of ABRW, York, who will race his Reo 8.5, Like Oxygen, says, “I enjoy it because it’s where all the sports boats go to race. It’s an anticipated event for all of us (there are 15 entered so far, with more to come). The get-together at the end of every day is fun. I’ve been a regular competitor there for years. In fact, I like Airlie so much, I bought a place up there!”

Olympic announcement - Steve Watson, Whitsunday Regional Council Mayor Ry Collins, Terry Archer, Amanda Camm MP, Member for Whitsunday & Amanda

Van Stom and York are among those who urge all others to join the current plus 100 entries set to compete across 10 classes in this sailing paradise.

No matter what type of boat you sail, there is a division for all at Airlie Beach Race Week, so go online now to enter and view the Notice of Race: https://www.abrw.com.au/

Di Pearson/ABRW media

Please credit photos as attached    

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Omaya Yachts

OMAYA 50

The OMAYA 50 is a 50ft luxury catamaran with a contemporary design. This stunning yacht provides very comfortable onboard living with plenty of space for the entire family and guests. What makes the OMAYA 50 stand out from other manufacturers is the best-in-class beam of 8.4 meters. This large beam provides a lot of additional space in the lower deck and cabins, as well as a very generous salon living space. This ensures the family & guests can feel like at home with a spacious and fully equipped galley, ample indoor and outdoor seating, and even space for crew onboard.

OMAYA 50 EXTERIOR

The bow area of the OMAYA 50 is a very special place. Due to the yachts’ large beam and clever customer focused layout, this is a great space to spent lazy days soaking up the sun and having the best of time entertaining with friends. From the generous and comfortable seating areas, the large sunbeds, and open deck space, this is another reason OMAYA is such an appealing proposition. Practicality is very important and here OMAYA has designed a direct access door to the bow area, which makes access to the bow so much easier and safer. All these features combined make the OMAYA 50 such a great place to be for holidays or longer term living aboard.

FLY BRIDGE

There is a versatile outdoor cockpit area that can be used for sunbathing, outdoor dining, or just to enjoy the ocean views while having your morning coffee with seating and a coffee table. There is plenty of storage for your water toys. This large beam catamaran provides fantastic access to the water, particularly with the optional high/low aft platform, creating your own beach club area.

OMAYA 50 INTERIOR

The salon of the OMAYA 50 has plenty of space for relaxing, dining, reading your favourite book, or catching up on the latest movie on the big screen TV. There is a commanding helm station with the latest technical equipment.

The integrated galley is fully kitted out with usual appliances and has plenty of storage. The dining area with high/low table can seat 10 guests in comfort while enjoying incredible views of the ocean through the large glass doors that extend the entire width.

LOWER DECK

The OMAYA 50 has generous lower deck space and offers two configurations. The owner version provides a large master cabin that takes up the entire port side with double bed, sofa, desk and vanity area, integrated wardrobe space, and a large ensuite with double basins and a full standing shower.

There are two further double guest cabins on the starboard side with ensuite bathrooms and integrated wardrobe space. There is an additional crew cabin in the starboard forward peak.

TECHNICAL SPECIFICATION - MODEL OMAYA 50

Length overall   14.98m / 49.1ft

Length waterline   14.27m / 49.1ft

Beam overаll   8.39 m / 27.5ft

Height above waterline w/ hard top  6,94m/22,7ft

Draft  1.05m / 3,4ft

Unloaded weight / Light displacement (approx.)  20.5t / 45,195lbs

Engines  2 x YANMAR 4LV 320hp    2 x YANMAR 6LV 440hp

Fuel tank  2 x 425L / 550L  2 x 112gal / 145gal

Fresh water capacity    2 x 300L     2 x 79gal

Black / Gray water capacity   2 x 80L + 1 x 125L /  2 x 21gal + 1 x 33gal    2 x 170L / 2 x 44gal

Cabins (Up to)   4+2

Heads (Up to)   4+1

Showers (Up to)   4+1

CE Certification   A:14

Architect   i-Yacht, Hamburg, Germany

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Multihull Central

Introducing the New Seawind 1160XL

Longer, Wider, Higher, Faster

For over two decades, the Seawind 1160 has been one of the most celebrated cruising catamarans in the world. Launched in 2004 after the success of the Seawind 1000, the 1160 quickly earned numerous International Design and Boat of the Year Awards, with hundreds of boats sold worldwide. These vessels have completed many hundreds of ocean crossings and multiple world circumnavigations, proving their blue water capability time and time again.

In 2014, the Seawind 1160 Lite introduced the second generation of this model, offering a simplified and more accessible version while still delivering the performance, safety, and ease of maintenance Seawind owners love.

Now, in 2025, we take the 1160 into Generation 3 with the all-new Seawind 1160XL – A modern evolution of an award-winning classic.

What’s New with the Seawind 1160XL?

Following the legacy set by her predecessors, the 1160XL retains all the great award-winning features this model is known for, whilst packing in a serious number of design updates with brand new styling, updated naval architecture (underwater performance) all coming from a complete new set of production tooling.

• Retained iconic Seawind 1160 features

• Dual protected helms for 360-degree visibility and unrivaled safety

• Tri-fold saloon door transforming the saloon and cockpit into one seamless open living space

• Exceptional performance with lightweight construction and slender hulls

• All running rigging to the cockpit, making short-handed and night sailing easy

• Unparalleled ventilation with large forward-opening saloon windows

• New Model features that elevate ownership experience on the Seawind 1160XL

• Extended hull with reverse bows - Improves pointing ability, increases buoyancy in choppy conditions, and adds modern styling

• Wider hulls & increased freeboard – creating more internal volume and headroom

• Raised and flattened foredecks – increasing safety and comfort while moving forward on deck

• Moulded toe rails and four wire 800mm high lifelines adding further to the safety features of this proven offshore design

• Optimized engineering – maintaining an excellent power-to-weight ratio while achieving ISO/CE Category A certification for unrestricted offshore sailing

• New side boarding gate and extended transom step -  for effortless dockside access

Specifications at a Glance

Built for performance, comfort, and adventure, the Seawind 1160XL retains its legendary sailing pedigree while introducing a range of modern refinements. Whether you’re chasing the horizon or enjoying a weekend getaway, this next-generation cruiser is designed to impress. With increased hull volume, advanced engineering, and optimised weight distribution, the Seawind 1160XL takes performance and comfort to the next level. Whether you’re looking for an easy-to-handle coastal cruiser or a serious blue water adventure catamaran, this model is built to deliver on every front.

For more information on the models visit

www.multihullcentral.com/boat/seawind-1160-xl
 

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Sail GP

Emirates Great Britain deliver when it counts to win

KPMG Australia Sail Grand Prix | Sydney

 Disappointment for Australia as they pay the price from a penalty in the start box in the Final

SYDNEY - 9 February, 2025: Emirates Great Britain has caused an upset at the KPMG Australia Sail Grand Prix | Sydney today, knocking the favoured Australian team off the top step in the Final on Sydney’s iconic Harbour.

Tom Slingsby’s Australia Team were served a penalty in the start box of the Final by umpires, sending them to the back as Dylan Fletcher’s Emirates Great Britain and Giles Scott’s Canada fought for the honours ahead. “Personally, it’s massive when you know Sydney is where SailGP started in 2019 and where I started my journey, so to come back here and win is amazing. I’m just really proud of the whole team and how they’ve included me in it when I’ve obviously been learning a lot and making a lot of mistakes so I think there’s more to come.” Fletcher said, speaking about his team’s win.

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Sail GP

AUSTRALIA DOMINATES OPENING DAY OF ITM NEW ZEALAND SAIL GRAND PRIX IN AUCKLAND

  The Australian’s have secured pole position in the leaderboard following the opening day of the ITM New Zealand Sail Grand Prix in Auckland, with their APAC rivals New Zealand finishing in fourth place.

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Superyachts ...

Australia’s full-custom superyacht builder Echo Yachts
commences construction of world’s largest sailing catamaran superyacht

ASC57: 57m Adventure Sailing Catamaran

  Australia’s custom superyacht builder Echo Yachts has commenced construction of their latest creation, the ASC57, at their superyacht building facility in the Australian Marine Complex, Western Australia. This groundbreaking project brings together industry leaders from across the globe. In partnership with renowned Dutch sailing yacht designers Dykstra Naval Architects and Australia’s leading aluminium multihull experts One2Three Naval Architects, Echo Yachts will deliver the world’s largest sailing catamaran to date.

Drawing inspiration from Echo Yachts’ 2023 newbuild motor yacht M/Y Charley 2, the ASC57 sailing yacht will feature similar luxury accommodation, a vast array of water toys, and helicopter landing capabilities. 

However, this superyacht introduces a twin-Dynarig sail system by Southern Spars, paired with Dykstra’s sleek and refined sailing yacht aesthetics. As a result of the addition of sail power, a regenerative power system will be installed, utilising twin shaft generators and a battery storage system to allow for silent running under sail. With a CPP driveline, this system also allows the vessel to utilise the main engines without the need to run separate generators to power the vessel more efficiently when motoring. 

With its hydrodynamic efficient aluminium hulls, full sail-powered propulsion, power regeneration and deployment options, the ASC57 offers significant eco-friendly performance advantages and greener modes of operation compared to traditional motor yachts.

Project Overview:

Echo Yachts are teamed with two renowned sailing and aluminium multihull design firms to deliver the ASC57 project. An extremely efficient aluminium hull form is complemented by twin Dynarigs providing a total sail area of some 1660 m2 for eco-efficient long range cruising. Weight reduction, simplicity and ease of operation will further characterize this project.

The renowned Dykstra Naval Architects, of Amsterdam in The Netherlands, are providing the yacht’s exterior styling, layout and naval architecture, with an enviable list of project credentials including their iconic sailing yacht projects such as S/Y Black Pearl and S/Y Hetairos. Detailed naval architecture and structural design are being performed by Australian firm One2Three Naval Architects, the same aluminium and multihull design experts responsible for the Naval Architecture of the international award winning 84m aluminium trimaran superyacht M/Y White Rabbit delivered in 2018, and 56m catamaran superyacht M/Y Charley 2 delivered in 2023.

This new large-scale catamaran sailing yacht project sees Echo Yachts expand on their proven custom motor yacht construction capabilities, into the large sailing yacht market.

Custom Newbuild & Refit Sales enquiries:    This email address is being protected from spambots. You need JavaScript enabled to view it.

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ATL / Noosa Marine

DuFLEX kits deliver access and adventure

Composites are the key to a lightweight, low maintenance “big ute on water” under construction at Noosa Marine.

 Noosa River will soon welcome a state-of-the-art, Roger Hill-designed hybrid multihull, with all the aesthetic appeal of “Noosa style” and the capacity to accommodate 52 passengers, including 14 wheelchairs. Pitched as a totally inclusive cruise experience, the new boat is under construction at Noosa Marine, where Director, Julian Griffiths is overseeing a team of two labourers working on this unique 12-metre by 6-metre vessel.

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Cure Marine

Australian 55-Foot Carbon Fibre Catamaran Lightest in Class

The new Cure 55GT nears launch, sets new standards in weight and performance and utilises in-house composites technology.

Coolum Beach, Sunshine Coast — Production of the new Cure 55 catamaran is on schedule, with boat #1 due to launch in Q4 this year. Boats 2, 3 and 4 are hot on its heels.

The Cure 55GT is being hand-crafted by the Cure Marine in-house team of highly-skilled, world-class shipwrights in a dedicated Coolum Beach facility. With a full carbon fibre hull and integrated carbon fibre longeron and forebeam, the Cure 55 showcases a commitment to lightweight construction combined with structural integrity. Equipped with Harken deck hardware, North Sails 3Di sails and self-tacking jib and B&G instruments, the Cure 55GT ensures precision control and optimal performance. Dual articulating helms provide intuitive handling, whilst a Yanmar 57HP diesel engine and 29kW Meteor/Safiery electrical system guarantee reliable power and efficiency.

Production of the Cure 55GT catamaran has its foundations in the ‘Designed For Manufacture’ principle, underpinned and supported by some of the latest technology currently in use in global boat building.

Designed and built on the Australian Sunshine Coast, the Cure 55GT integrates over 3kW of solar power and a full electric galley, emphasising sustainability and self-sufficiency at sea. The Cure 55GT’s power-to-weight ratio ensures exceptional performance without compromising on comfort.

Renowned naval architect Paul Bury led the design process, supported by Cure Marine’s dedicated in-house design team.

“Here at Cure Marine, we are proud of our Australian heritage and our team of world-class boat builders. We’re striving to push the boundaries of what is possible in contemporary catamaran design and manufacturing. The new all-carbon Cure 55GT will be a stand-out in its class and we’re thrilled to reveal this exciting new vessel to the world very soon.” — Carl Bird. CEO, Cure Marine

www.curemarine.com.au/

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Dream Yacht Sales

If the idea of owning a cat appeals but the cost and the hassle don’t, a yachtshare opportunity could be just what you need – and it can also get you a sought-after Bali Catsmart. Dream Fractional eliminates many of the barriers for would-be yacht owners with a much lower buy-in cost.

Owners reap the benefit of the world recognised expertise of Dream Yacht Global in yacht sales, boat ownership programs and over 40 worldwide yacht charter destinations, and the team’s local knowledge and experience with Queensland Yacht Charter’s, Dream Yacht Sales and Bali Catamarans. The Bali Catsmart yachtshare opportunity in the Whitsundays is an exclusive offer of up to 8 shares in the owner’s version of the Bali Catsmart, which provides unprecedented living space with a dedicated private owner’s suite, complete with spacious ensuite, plus two further guest cabins with shared ensuite for friends and family.

The Catsmart comes prepared for long distance cruising, with an ergonomic fully-equipped galley, a Code Zero sail, a watermaker and a full-spec air-conditioning system for your comfort. The Catsmart delivers all the unique features of the Bali catamaran range. There’s a maxi saloon lounge for 10 guests and a large chart table facing the sea, both of which are models of ergonomics and comfort. The ergonomically designed galley is located forward, meaning it sits central between the saloon and the forward cockpit, which means easy service either for interior dining or for alfresco meals and snacks in the forward cockpit and sunbathing area through the galley’s forward window.

A key feature of Bali cats is the large tilt door that lifts the aft bulkhead and seamlessly connects the back of the boat to the front. This results in exceptional light, ventilation and clear open space without equal, creating more than 66 square metres of usable living space. The aft cockpit offers a place to relax, as well as providing stowage for all your gear, and the helm stations are accessible from both sides of the boat so the helmsman does not have to be alone. The open space design means there are plenty of areas to choose from so you and your guests can be together or can find privacy.

Thanks to a wider sail plan and a boom lowered to the level of the coach roof for improved accessibility, the Catsmart is an extremely easy-to-handle boat that offers superb sailing pleasure. With twin helms aft on port and starboard, handling is effortless.

Dream Yacht Australia’s Managing Director Mr Christophe Vanek – who has acquired over 30 years of experience in professional yacht racing including three America’s Cup challenges, Maxi Multihull racing on the international circuit, 15 Sydney to Hobarts, and who is a qualified RYA Yachtmaster Offshore – offers

share owners the unique opportunity of coaching and tuition with the purchase of a share in the Bali Catsmart.

bali-catamarans.com.au

SPECIFICATIONS

Length (LOA)                        12.84 metres

Beam                                     7.07 metres

Displacement                        11.4 tonnes

Draft                                      1.22 metres

Range                                    400 nautical miles under engine

Engines                                  2 x 29 to 47,5 hp*, Sail drive

Number of cabins
Owner’s Version                     3

Classification                          CE Category: Cat. A 10 persons

Base price
(Ex taxes/Owners Version)     €345,000.00

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Airlie Beach Race Week

Young kids added to mix for Ocean Dynamics and Mount Gay Airlie Beach Race Week

Dale Mitchell will skipper M32 World. Photo Shirley Wodson, ABRW.

Entries for Ocean Dynamics and Mount Gay Airlie Beach Race Week 2024 continue to grow and among the latest, with two boats in the running, is local Michel Van Der Zwaard, whose two kids have been added to one of his boats for the 36th running of Airlie Beach Race Week, to be held from 8-15 August.

Van Der Zwaard’s daughters, Grace (10) and Mia (7), along with older school girls Jazz and Demi, are among the crew on his MC38 Black Jack 38. The boat, formerly owned by Peter Harburg, is entered in the Performance Racing Division.

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