WinGD Introduces High-Pressure LNG Dual-Fuel Engine for Ultra-Large Container Ships

Swiss marine engine developer WinGD has unveiled its first high-pressure LNG dual-fuel engine, the X-DF-HP, designed to meet the operational demands of ultra-large container vessels (ULCVs). The announcement was made at Marintec China 2025 as shipowners continue to evaluate fuel strategies amid uncertainty around global emissions regulations.

New Engine Targets ULCV Efficiency and Power Requirements

The X-DF-HP series will be available in X82 and X92 bore sizes, with initial deliveries expected in 2028. The engine is tailored to the high power output, sustained engine loads and efficiency requirements typical of the ULCV segment. Based on internal comparisons with WinGD’s diesel platforms and comparable dual-fuel systems, the high-pressure configuration is expected to deliver higher fuel efficiency.

“Large container vessels present a unique propulsion challenge,” said Benny Hilström, Vice President, Market Development at WinGD. “They demand immense power, exceptional efficiency and long-term fuel flexibility. With the X-DF-HP, we are providing operators with a purpose-built solution for the most power-hungry vessels, offering uncompromised, trouble-free propulsion.”

Designed for Installation Flexibility and Emissions Compliance

According to WinGD, the X-DF-HP is compatible with existing auxiliary system requirements, including conventional high-pressure fuel supply arrangements, which is intended to simplify installation for shipyards. The engine achieves IMO Tier III compliance in both gas and diesel modes with a standard SCR system.

“The X-DF-HP is built on the high-pressure Diesel X92-B engine platform that has already proven itself as one of the most efficient and reliable large-bore solutions in the container segment,” said Sebastian Hensel, Vice President R&D at WinGD. “Building on our long-standing diesel engine expertise and our deep experience in LNG dual-fuel technology, we’ve developed the X-DF-HP. Our tests and simulations show the X-DF-HP will deliver a clear step up in fuel efficiency and GHG performance compared to existing high-pressure dual-fuel engines on the market.”

Part of an Expanding Multi-Fuel Propulsion Portfolio

The new high-pressure LNG engine extends WinGD’s alternative-fuel range, joining the methanol/ethanol-capable X-DF-M/E and the ammonia-fueled X-DF-A products. The company’s strategy centres on developing platforms that can be retrofitted as fuel pathways evolve, including the ability to convert existing X92-B engines for high-pressure LNG, methanol, ethanol or ammonia.

This approach comes as LNG remains a commercially viable option for meeting FuelEU Maritime requirements. The X-DF and X-DF-HP engines are designed to operate with renewable methane blends, providing a route to reduced lifecycle emissions without extensive retrofitting.

LNG Market Outlook and Operator Pathways

With the IMO’s Net Zero Framework currently paused and regional regulatory approaches diverging, LNG-fuelled vessels continue to attract interest from carriers seeking a lower-risk compliance pathway. “For ultra-large container vessels choosing LNG as their pathway to net zero, the X-DF-HP is the most cost-effective option,” Hilström added. “For all other vessels, the low-pressure X-DF platform continues to deliver the best lifecycle economics. Together, these propulsion options give vessel owners and operators complete confidence in selecting LNG—and WinGD—for the energy transition of their fleets.”