MOL Develops Innovative Designs for Wind-Assisted LNG Carriers
Mitsui O.S.K. Lines Advances Wind-Powered Shipping
Mitsui O.S.K. Lines (MOL) is making significant strides in wind-assisted propulsion technology, following the successful deployment of its first rigid, retractable sail on a bulk carrier in October 2022. The company aims to install its innovative “Wind Challenger” system on 25 vessels by 2030 and 80 vessels by 2035. Collaborating with industry leaders, MOL is developing new designs for LNG carriers that promise substantial fuel savings, potentially transforming maritime shipping efficiency.
Innovative Designs for Enhanced Fuel Efficiency
MOL is partnering with HD Hyundai Heavy Industries and Samsung Heavy Industries, alongside Lloyd’s Register, to create advanced designs for LNG carriers. These new vessels are projected to achieve fuel savings of up to 30 percent per voyage and 15 to 20 percent annually. The latest designs feature four rigid sails, a significant upgrade from the previous two-sail configuration. This change is made possible by relocating the bridge towards the bow of the vessel, allowing for optimal sail placement and maximizing fuel efficiency.
The new vessels will measure between 938 feet (287 meters) and 951 feet (290 meters) in length, with a capacity of 174,000 cubic meters (cbm). The innovative sail system, known as the Wind Challenger, is designed for automatic extension, retraction, and rotation. The first installation on the coal carrier Shofu Maru demonstrated promising results, achieving a reduction in daily fuel consumption by up to 17 percent, translating to an average of 5 to 8 percent savings per voyage during its initial trips to Japan from Australia, Indonesia, and North America.
Safety Assessments and Approvals for New Designs
MOL has conducted comprehensive risk assessments for the new vessel designs in collaboration with shipyards, classification societies, and flag states. These assessments addressed various factors, including sail arrangement, visibility impact, emergency operation procedures, and other safety measures. Safety evaluations were also performed in partnership with the relevant flag states to ensure compliance with maritime safety standards.
The new vessel designs have received Approval in Principle (AiP) from the Marshall Islands for the design developed with HD Hyundai Heavy Industries, while the design created with Samsung Heavy Industries has been approved by Liberia. With these approvals secured, MOL is now progressing to detailed design work for the actual construction of these innovative vessels, marking a significant step forward in the company’s commitment to sustainable shipping practices.
