ClassNK has granted approval in principle (AiP) for a new design concept regarding a retrofitted Kamsarmax bulk carrier, which is being converted from traditional fuel to a methanol dual-fuel system. This initiative is a collaborative effort between TSUNEISHI SHIPBUILDING Co., Ltd. and the Mærsk Mc-Kinney Møller Center for Zero Carbon Shipping. The certification signifies the regulatory viability of this vessel, marking a significant movement towards integrating alternative fuels into the current fleet, particularly since Kamsarmax bulk carriers are commonly utilized in maritime operations.
The design concept emerged from a project focused on transitioning Tsuneishi’s Kamsarmax bulk carrier standard design into a methanol dual fuel configuration. The objective is to create a model that facilitates a larger green transition within the medium-sized bulk carrier sector. The project is currently addressing retrofit challenges, one of which includes identifying the optimal placement for the new methanol fuel tanks.
ClassNK conducted a thorough design review based on its ‘Part A Guidelines for Ships Using Methyl/Ethyl Alcohol as Fuels (Edition 3.0.0)’ as part of the ‘Guidelines for Ships Using Alternative Fuels.’ The review also included a risk assessment through HAZID. Following this comprehensive analysis, ClassNK issued the AiP after confirming the feasibility of essential design elements, such as the arrangement of methanol fuel tanks and the fuel supply systems, ensuring they meet regulatory standards. Going forward, ClassNK remains committed to supporting decarbonization initiatives by providing safety assessments and other related services to promote sustainable shipping practices.