Everllence – formerly MAN Energy Solutions – has received its first order for a methanol dual-fuel engine for superyacht currently under construction at an undisclosed European shipyard.
The engine is Everllence’s 175DF-M (Dual-Fuel Methanol) which was first announced in November 2023.
Everllence’s scope of supply covers two 12V 175DF-M and one 16V 175DF-M variable-speed yacht gensets, including methanol fuel-supply systems.
The order is also the first for a high-speed dual-fuel methanol engine dedicated to diesel-electric and mechanical propulsion.
Delivery is scheduled for July 2027.
We are convinced that the 175DF-M will play a pivotal role across a wide range of marine applications.
Florian Keiler
Everllence says many customers from the ferry, cruise, offshore, tug, superyacht and governmental segments have shown a strong interest in the 175DF-M engine since it began development in 2023.
The company has been working with several customers on concrete vessel concepts – both on newbuilds that are methanol-capable on delivery, and on methanol-ready concepts that allow future conversion of current ship designs via a retrofit scenario.
“We are happy to announce that a leading superyacht builder has selected the 175 dual-fuel methanol engine as its latest project,” said Dr Alexander Knafl, head of R&D, four-stroke at Everllence.
Reliability
“The engine features very high methanol-combustion efficiency, low emissions and super-high reliability.”
Florian Keiler head of high-speed sales, marine four-stroke at Everllence, added: “The customer’s decision to order three 175DF-M variable-speed gensets for a methanol-diesel-electric propulsion setup reflects its strong confidence in our methanol engine technology.
“The combination of advanced performance, future-proof design, and Everllence’s clear commitment to sustainable shipping – embodied in our mission, ‘Moving big things to Zero’ – was key to this milestone.
“We are convinced that the 175DF-M will play a pivotal role across a wide range of marine applications powered by carbon-neutral fuels.”
The high-speed 175DF-M engine is based on computational simulations and the optimisation of the combustion process on the test bed.
High fuel-efficiency
The 175DF-M is set to achieve never-before-seen methanol-shares in combination with a high power-density and high fuel-efficiency.
The 175DF-M can be optimised for diesel-mechanical and diesel-electric propulsion to achieve the largest methanol share and best efficiency for various applications and load profiles.
The engine has also been awarded the ‘fuel ready’ certificate by DNV.
“Based on numerous exchanges with customers, we came to the conclusion that the dual-fuel principle, reliability, efficiency, a high methanol share, competitive life-cycle costs and maximum achievable output were key requirements for the 175DF-M’s development,” explained Florian.
“Therefore, after conscientious investigation and consideration, we settled upon the PFI combustion technology as the most favourable.”
