GX Superyachts Unveils a Highly Efficient 138-Foot Hybrid
GX Superyachts is upping the ante on cruising efficiency.
The Slovenian outfit, launched by Greenline Yachts in 2024, has unveiled a superyacht with integrated energy architecture that ensures a clean, quiet, and comfortable cruising experience.
The new GX42, part of a series spanning 79 to 184 feet, was developed in-house, with Too Design founder Marco Casali spearheading design and Names studio founder Francesco Rogantin executing naval architecture and engineering. The 138-footer combines a parallel diesel-electric hybrid propulsion system with a large battery bank and expansive solar panels—something which GX says is unusual for a yacht of this size.
Having all that green tech part of the same system means the vessel can select the most appropriate energy source for the operating conditions. It could use the conventional diesel engines for longer expeditions or power the hotel load on pure electricity, for example. The setup gives the yacht the potential for up to 48 hours of zero-emission operation at anchor and also reduces onboard electricity consumption by up to 45 percent.
Lounge and dining space onboard.
The exterior is also engineered for efficiency, with a long, slender hull that is designed to move through the water with ease. At an economical cruising speed of 9 knots, the yacht has a range of approximately 5,000 nautical miles. Conventional propulsion, obviously, allows higher cruising speeds of up to 17 knots.
“The GX42 is the result of a very clear philosophy: efficiency should be engineered into the yacht from the outset, rather than added afterwards through individual technologies,” GX Superyachts CEO and founder Vladimir Zinchenko said in a statement. “By integrating a parallel hybrid propulsion system, substantial battery storage, solar generation, an efficiency-led hull and intelligent energy management, we have created an energy architecture in which every element works together.”
Christened Merinos, the first GX42 is a Raised Pilot House version with an elegantly curved superstructure and streamlined upper deck. The layout is geared toward entertaining, with a dining area for 10 and a comfortable salon located on the main deck. Above that, the expansive upper deck offers lounging areas, sunbeds, a bar, and a Jacuzzi. As for accommodation, a full-beam owner’s suite with a private forward terrace sits on the main deck, while a generous VIP suite with a fold-down balcony and three other guest cabins lie on the lower deck. Walnut, Italian leather, stone, and neutral fabrics create a warm, tactile feel throughout.
“This is no showboat for flexing the muscles,” Casali explains. “We worked closely with the owners to realise their priorities for a family-friendly design that favours extended periods on board.”
Click here to see all the photos of Merinos.
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Rachel Cormack
Digital Editor
Rachel Cormack is a digital editor at Robb Report. She cut her teeth writing for HuffPost, Concrete Playground, and several other online publications in Australia, before moving to New York at the…

