At the recent Monaco Yacht Show, a leading British yacht builder Sunseeker has revealed new Sunseeker 133 model. It will operate on a hybrid propulsion system developed jointly with Germany-based engines manufacturer MTU. Yacht Harbour discussed the future of hybrid propulsion engines with Darren Barnett, Marine Manager with MTU UK.


Sunseeker 133

Where does MTU decision to focus on hybrid systems for yachts come from?

MTU has been an engine supplier for many years. The company is around 110 years old. Over that time, we have specialised in manufacturing and supplying light-weight and high-speed diesel engines.

Now the time has come, when we have to be more than just an engine supplier, since the power requirements on-board yachts are getting greater. Owners of yachts want to operate them in a different way. They do not want to travel fast - they want to travel comfortably, economically and efficiently.

Therefore, the best solution to that is to offer the system that can power the vessel in different ways. Thus, it would provide both propulsion and supply of all the consumes on-board, such as air conditioning, stabilisers and other hotel loads.

Is that right, that speed is not the major concern anymore?

Yes, that is what we say. So it is not all about having the largest, most powerful engines. It is about being able to offer better experience on-board, whilst the customers spend their leisure time there.


Sunseeker CEO Andrea Frabetti and Darren Barnett

What makes hybrid propulsion different from other engine systems?

Diesel engines will remain the core of propulsion systems for boats in the future. Nonetheless, what we are doing is offering systems that can power a vessel using batteries, for example. We also deploy generators to provide power for not only propulsion, but also for conventional power needs on-board.

Actually, the way all of that is linked together is a clever part, because the hybrid system itself is greater than the sum of all the components. You cannot just select components and install them into the yacht. Apparently, they need to be integrated together, so that they operate seamlessly. We believe, that there is a great future in yachting for hybrid systems.

Our approach is that we will deliver the whole scope of supply. It means, not just the engine, not just a part of it but the whole system. Thus, we are also taking full responsibility for it. Customers want to have the knowledge that the complete system will be taken care of, because with complicated systems such as this one it can get difficult.

Currently, we are developing a hybrid system jointly with Sunseeker for the Sunseeker 133 yacht. And we are looking into a modular and serialised system, since we want to have a portfolio of components to select from, such as different diesel engines and several types of batteries and generators. 


Sunseeker 133

Do you think the hybrid propulsion system you are working on could be installed on other yacht models?

The ideas is, with Sunseeker we have the first or pilot installation. Therefore, at the moment we are working on the scope of supply for the Sunseeker 133. In the future, the basis we have developed with Sunseeker will be available for other yacht builders with different diesel engines, different batteries and different generators. It will be possible to customise the system for any particular yacht.

But is the system ready for installation yet?

We are still in the development phase, but we are close to finalizing the total scope of supply. Hopefully, Sunseeker soon will be able to begin construction of the 133 yacht with the hybrid system.

Then in the future, what do you think could be the largest size of a yacht to operate on hybrid propulsion?

The serialized system we are developing with Sunseeker is aimed more at the production yacht market. Naturally, much larger yachts have much more specific requirements. However, we have done it in the past and that is what we will continue to do in the future.

Operating as a custom service, we would develop a system to meet the customer’s requirements. That could be any size of yachts, up to the very largest ones. For instance, Sailing Yacht A operates on a kind of hybrid system, where MTU have supplied gensets.



Many builders now opt for more eco-friendly engines in general. Have you noticed raising environmental awareness among yachting clients?

Yes, definitely. Owners of yachts have realised that they probably could do something to more environmentally friendly. All the large yachts are the big consumers of power. What they could do, is raising awareness of where they can be more efficient. And it is obvious, that vessels running on diesels create emissions.

Alternatively, with a hybrid system, all those large vessels could operate in harbours using batteries. It is a great benefit, that it is emission-free and completely clean. The only problem with hybrid is that for the moment people do not understand what hybrid is. It is a long process, and we are trying to educate people, what the capabilities of that system are.

What is more, when a yacht is at anchor in a small bay and the owner of the yacht wants to swim around with family, they would not want a generator running with exhaust emissions coming on to the water. The environment would much nicer if there are no diesel engines running. We see it is a great benefit.

Latest News

44m Papa Joe Launched by Benetti
Benetti upheld nautical tradition with the slide launch of the magnificent Diamond 44M yacht, christened Papa Joe, on March 16th at the historic Viareggio shipyard. The ceremony marked the vessel's graceful entry into the water, paying homage to maritime customs upheld by Benetti for generations.Attended by shipyard executives, local dignitaries, and port authorities, the event celebrated the timeless tradition of slide launching, symbolizing the legacy of Benetti's illustrious history. The distinguished Papa Joe features exquisite external lines by Giorgio Maria Cassetta and opulent interiors meticulously crafted by Benetti's Interior Style Department.Captain BriniAs the seventh unit of the Diamond 44M series, Papa Joe will serve as a cherished family retreat for its discerning owner, who collaborated closely with the shipyard to personalize every detail. Reflecting a blend of elegance and sophistication, the yacht boasts spacious accommodations, including five staterooms for up to 12 guests and crew quarters for seven, all meticulously designed for utmost comfort.The owner's influence is evident throughout the yacht's design, with bespoke elements curated to exude an ambiance of tranquility and refinement. From the exquisite rosewood accents to the curated color palette, featuring soft neutrals with subtle pops of color, every aspect reflects the owner's distinct taste and style.Featuring luxurious amenities such as an elegant beach area, a spacious garage, and a lavish upper deck with a cinema room and hydromassage pool, Papa Joe offers unparalleled comfort and indulgence for its fortunate guests. Founded in 1873, Benetti is the oldest Italian shipyard specializing in luxury yachts. They design, build and sell composite vessels from 29 to 44m and steel and aluminum boats from 37 to over 100m. Their fleet consists of five categories: Class, Oasis, B.Yond, B.Now and Custom, to meet all the needs of the market, and they belong to the Azimut|Benetti Group, the largest privately owned luxury yachting group in the world.Credits: Benetti
Moonen Yachts and IYC Join Forces to Present Moonen 110 Mustique
Moonen Yachts partners with IYC as the central agent for the sale of their latest masterpiece, the Moonen 110 Mustique. Set to debut at LMC in Fort Lauderdale from April 8th, this 34-meter steel yacht promises unparalleled luxury and performance for discerning buyers.Crafted by Moonen's renowned design partner, René van der Velden, and adorned with custom interiors by Studio Indigo, the Moonen 110 Mustique epitomizes elegance and sophistication. With a full-beam owner's stateroom offering panoramic views, spacious accommodations for 10 guests and 5 crew, and extraordinary volume at 279GT, this yacht redefines opulence on the water.Powered by Caterpillar engines, the Moonen 110 Mustique boasts a maximum speed of 13 knots and a cruising speed of 10 knots, ensuring a seamless journey over its estimated 4000 nautical miles range. Its shallow draft enables unrestricted cruising, while its steel hull ensures safety and stability in any sea condition.IYC's appointment as the central agent further solidifies the yacht's prestigious status. With expansive exterior decks and top-notch amenities, including a 775-square-foot top deck, the Moonen 110 Mustique offers the ultimate retreat for relaxation and entertainment.Available for viewings in Fort Lauderdale, this exceptional yacht represents a rare opportunity for buyers seeking unmatched quality and craftsmanship. Moonen Yachts is a yacht builder based in the Netherlands, and its first yacht was built in 1964 under the original yard name of De Ruiter. In 1981, the yard was renamed Moonen Shipyards. It’s launching its first vessel under new ownership: Alhena. In 2017 Moonen Shipyards changed into Moonen Yachts. With the help of strong vision, innovative technology and new designers, Moonen is once again becoming the market leader in 30m to 50m luxury yachts.Credits: Moonen Yachts
Otam 90 GTS To Be Launched in May
Excitement brews at the Genoa shipyard as the highly anticipated Otam 90 GTS nears completion, scheduled for launch in May. Set to debut internationally at the Cannes Yachting Festival 2024 in September, this flagship marks a significant milestone as Otam celebrates its 70th anniversary.Fusing customized comfort, spaciousness, and style, the Otam 90 GTS boasts twin MTU engines generating 2,600hp each, promising exhilarating speeds exceeding 40 knots with Arneson drives.Crafted in collaboration with Giuseppe Bagnardi of BG Design Firm, the yacht boasts bespoke design elements. The helm console, inspired by racing cars, features a carbon-fiber structure resembling Formula 1’s protective ‘halo’ system, complete with an integrated cooling system.The hull, adorned in a custom silver metallic paint with bronze accents, showcases the owner’s distinctive taste.Internally, the layout caters to luxury without compromising sporty aesthetics. The three ensuite cabins include a full-beam owner’s cabin, a VIP cabin, and a guest cabin, alongside a lounge. The main deck offers a spacious cockpit, separate kitchen access, ample sunbathing areas, and a bathing platform.Photo by Michele Luigi MulasWith endless customization options like full or half-height side windows and various garage sizes, the Otam 90 GTS epitomizes the shipyard’s dedication to pure custom craftsmanship.Matteo Belardinelli, Otam Sales & Communication Manager, affirms, “Every detail has been developed with and for the owner, ensuring a unique and exclusive expression of luxury.”The shipyard’s history started in 1954 in Liguria. Its professionalism is what made it stand out, very quickly becoming the first authorized Riva yacht Service Center for the Med Sea. In the 80’s Otam fit around 25 yachts for an American builder before starting his own production of Otam 45’ and 55’, earning significant attention. Today Otam has produced around 90 yachts, becoming an Italian specialist, and, together with its custom range, offers a limitless choice between 45’ and 130’.Credits: Otam
Omikron Yachts Reaches Milestones for the OT-60, OT-80 and Argo-54 Projects
The Greek company Omikron Yachts shared its achievements. The 3rd OT-60 hull has already been delivered to the satisfied owner, and the shipyard continues to operate at full capacity: the delivery of hull 4 is scheduled for the end of April, the construction of hull 5, as well as the beginning of the construction process of hull 6. This is an important achievement for the shipyard.OT-60In addition, Omikron Yachts reports that the new OT-80 is under development. The OT-80 represents the next evolution of Omikron's slow yachting concept. This initiative was undertaken with the assistance of employees who formed a proven team to create the OT-60. Lorenzo Argento and the Juan-K office will ensure that the OT-80 continues the brand's tradition of pushing boundaries and setting new standards in the industry.At the shipyard The 54-meter super sailing-boat, Argo 54, is progressing seamlessly. As Omikron Yachts delves deeper into the intricate details, all signs indicate that Argo 54 will establish new benchmarks in both performance and design. Key components, including the impressive 54m mast and the 22m boom, are already on-site, awaiting assembly.“The delivery of OT-60’s Hull Number 3, the development of the OT-80, and the progress on Argo 54 all reflect our relentless pursuit of excellence. We are grateful for the collaboration with Lorenzo Argento and the Juan-K office, and we are excited to continue setting new standards in the world of luxury yachting,” comments Nikolas Dendrinos, Chairman of Olympic Marine, parent company of Omikron Yachts.Between 1969 and the late 90s, the Olympic Yachts shipyard manufactured over 2,000 sailing boats. Starting in 2019, the shipyard underwent a comprehensive renovation, revitalizing its capabilities to design and manufacture contemporary, high-quality boats.Credits: Omikron Yachts
24m X78 Fly Delivered by Holterman Shipyard
The Dutch boatbuilder, Holterman Shipyard, has delivered its premier X78 Fly to its esteemed owner. The 23.9-meter superyacht, a stellar addition to the X-Treme series, is tailored for warm-weather voyages along Dutch canals and northern waters.Crafted by Bernd Weel Design, the vessel boasts a sleek profile and spacious hull, elegantly adapted to accommodate the flybridge. Amenities abound, featuring a full-beam master cabin, two twin VIP cabins, and a guest cabin forward, all adorned with floor heating and meticulously crafted solid wood interiors.Highlighting the X78's design is the expansive flybridge, designed with fold-down wings that enhance the yacht's width and provide ample space for social gatherings. Equipped with a wet bar and seating for up to 12 guests, the flybridge offers both shade under a hardtop and open-air enjoyment with an electrically operated sliding canvas roof.Technical innovations include a hydraulically operated stern platform capable of hoisting a tender up to 1000kg, Volvo-Penta dynamic positioning, and a thermal FLIR camera for comprehensive system monitoring in the engine room.With a maximum speed exceeding 26 knots, the X78 Flybridge promises an exhilarating cruising experience for its fortunate owner and guests.Dutch yard Holterman Shipyard was founded in 1964 and has been a market leader in high-end yacht building for more than 50 years. Based in Meppel, the shipyard produced the “in-house” yachts with the highest possible craftsmanship. Holterman Shipyard specializes in custom-built yachts from 15m.Credits: Holterman Shipyard