CMA CGM is preparing to trial WinGD’s innovative Variable Compression Ratio (VCR) technology on its container ships, marking the first real-world application of this new dual-fuel engine technology. After successful factory tests demonstrated significant efficiency improvements with both diesel and LNG, CMA CGM is moving forward with a comprehensive long-term field test to validate the technology’s performance and reliability in operational conditions. The VCR technology dynamically adjusts the compression ratio of WinGD's X-DF dual-fuel engines based on the type of fuel used, ambient conditions, and engine load. This adaptability aims to optimize fuel consumption and reduce greenhouse gas emissions, offering a notable advancement over traditional fixed-compression engines. The adjustable compression ratio is a pioneering feature, as it is the first of its kind in marine engines. The trial will begin once the vessel undergoes dry-docking in September, during which the VCR system will be installed on the ship’s WinGD RT flex50DF dual-fuel engine. This testing phase is crucial for confirming the operability and long-term reliability of the VCR technology in real-world maritime operations.