In a significant development for the maritime industry, Mitsubishi Shipbuilding, a part of the Mitsubishi Heavy Industries (MHI) Group, has secured orders for Japan’s first methanol-fueled roll-on/roll-off (RoRo) cargo ships. These innovative vessels are set to revolutionize coastal shipping while contributing to environmental sustainability.
The Methanol Advantage
Methanol, a clean-burning alternative fuel, offers several advantages over traditional heavy fuel oil. Let’s explore how these methanol-fueled RoRo ships are poised to make a difference:
1. Environmental Impact Reduction
The main engine of these ships is a high-performance dual-fuel engine capable of using both methanol and heavy fuel oil. By opting for methanol, these vessels achieve a remarkable reduction in CO2 emissions—more than 10% compared to their fuel oil-powered counterparts with similar hull designs. This commitment to sustainability aligns with global efforts to combat climate change.
2. Enhanced Efficiency
To further improve efficiency, Mitsubishi Shipbuilding employs its proprietary energy-saving system technology. This includes high-efficiency propellers and high-performance rudders designed to minimize resistance during propulsion. Additionally, a windscreen at the bow and a vertical stem contribute to reduced drag, enhancing overall fuel efficiency.
3. Increased Capacity
The two methanol-fueled RoRo ships will be approximately 169.9 meters in overall length and 30.2 meters in breadth, boasting a gross tonnage of 15,750. Their loading capacity can accommodate around 2,300 passenger vehicles. This significant increase in vehicle loading capacity per voyage promises greater flexibility in ship allocation schedules, allowing crew members more holiday and rest time—a positive step toward working style reforms.
While methanol-fueled RoRo ships have already been deployed as ocean-going vessels worldwide, this marks the first construction of coastal vessels for service within Japan. As the maritime industry continues to explore alternative fuels, the use of green methanol may further reduce CO2 emissions throughout the fuel’s lifecycle.
