GX Superyachts Unveils Hybrid GX42 Yacht
The 138-foot GX42 debuted at the 2026 Monaco Yacht Show as the first vessel in a new 42-meter series.
Updated on Nov. 9, 2026 in Electric Vehicles
GX Superyachts introduced the GX42 at the 2026 Monaco Yacht Show. The 138-foot yacht is the debut of a new 42-meter series, using parallel diesel-electric hybrid propulsion.
Why it matters
The GX42 pairs conventional diesel engines with a large lithium iron phosphate battery bank, reflecting a broader push to reduce emissions and onboard energy use in the luxury marine sector. Its hybrid design is intended to lower fuel dependence while preserving long-range cruising capability.
The GX42 carries approximately 938 kWh of lithium iron phosphate battery capacity and an integrated photovoltaic array rated near 27 kWp, with a reported cruising speed of about 9 knots and a range exceeding 5,000 nautical miles. Manufacturer projections of up to 48 hours of zero-emission anchor operation have not been independently confirmed.
The players
GX Superyachts
GX Superyachts is the builder that introduced the GX42 and its new 42-meter series at the Monaco Yacht Show.
Marco Casali
Marco Casali is a designer credited with the exterior and interior design of the GX42.
NAMES
NAMES provided naval architecture and engineering input for the GX42.
The details
Exterior and interior design is by Marco Casali, with naval architecture and engineering input from NAMES. The hybrid system uses electric machines integrated into the drivetrain, allowing mechanical and electrical power to work together or independently. The yacht has five staterooms and a dining area for 10.
Timeline
The GX42 was introduced at the 2026 Monaco Yacht Show.
Roadmap
The GX42 extends parallel diesel-electric hybrid propulsion, in which mechanical connections between MAN main engines and the propeller shafts are retained alongside integrated electric machines, into a new 42-meter series. Its design reflects a wider effort among luxury builders to electrify onboard systems while keeping conventional engines for long-range travel.
For superyacht buyers, hybrid propulsion with a 938 kWh battery bank could enable quieter, emissions-free anchoring for up to the projected 48 hours. Prospective owners will need to weigh these battery and solar capabilities against the vessel's conventional-engine range and cruising speed of about 9 knots.
The takeaway
Hybrid systems in luxury yachting are moving from concept to production, with battery capacity and solar generation becoming standard considerations for new builds. Buyers evaluating such vessels should compare manufacturer projections against verified performance data as it becomes available.
Further reading
Explore more on Electric Vehicles to see how hybrid and battery systems are being applied across transport.
Source note: This article includes information reported by Yachting.
