BMT and PA Consulting have conducted a collaborative study exploring the feasibility of retrofitting medium-sized ro-pax ferries with hydrogen propulsion and storage technology.
BMT says that as the global maritime sector faces mounting pressure to reduce greenhouse gas emissions, it has joined with PA to delve into alternative fuels for decarbonisation. The joint study focuses on the potential of one of these fuels, hydrogen, as a low-carbon alternative for ro-pax ferries. The objective is to assess the economic and technical feasibility of retrofitting existing vessels with hydrogen propulsion systems, presenting three retrofit alternatives with varying complexity, hydrogen demand, and costs.
The transport sector’s imperative to reduce emissions resonates strongly within the maritime industry, responsible for approximately 11% of global CO2 emissions. Ro-pax ferries alone contribute 37m tonnes of annual CO2.
Dr Thomas Beard, BMT Senior Analysis Engineer, said: “The recently launched white paper, ‘Feasibility of retrofitting medium-sized ro-pax ferries to utilise hydrogen propulsion and storage technology,’ delves into the challenges and opportunities unique to the maritime sector. The study… underscores the urgent need for tailored solutions within this dynamic industry. The requirement to meet Net Zero will require a change in fuel, as such BMT are exploring several options to support the maritime transition onboard vessels. However, the total cost of ownership (TCO) is an important aspect and collaboration with PA allows the techno-economic facts to be fully explained.”
The white paper employs an 85m ro-pax catamaran as a case study, analysing the vessel’s characteristics, operational profile, and potential for retrofitting. The vessel’s size, speed, and operational frequency make it a suitable candidate for transitioning to hydrogen propulsion. The study considers three retrofit options, incorporating technoeconomic modelling to assess costs and benefits.
Lee Hedd, Regional Sales Director for BMT in North America and Canada, added: “I am thrilled to be part of our collaboration with PA… BMT, with a rich history of addressing complex engineering challenges, is committed to delivering innovative solutions. Our joint effort with PA, focusing on retrofitting ro-pax ferries with hydrogen propulsion technology, exemplifies our dedication to pioneering sustainable advancements in the maritime sector. This study not only explores alternative fuels but underscores our team’s capability to tackle the unique challenges of decarbonisation. We’re excited to present our findings and contribute to shaping the ‘design’ future of environmentally responsible maritime transport.”
Mike Davis, energy transition expert, PA Consulting, said: “The need to identify credible decarbonisation pathways in the maritime sector is more pressing than ever, and we need to start looking closely at the various practical decarbonisation solutions that are available. Our aim for this study was therefore to move beyond high-level analysis and present a detailed technical and economic assessment of a realistic low-carbon retrofit option, considering an example vessel in operation today. This allowed us to get right to the heart of some of the key questions that we’re hearing from the sector as it looks to adopt low-carbon fuels, such as the quality of the business case for vessel operators, realistic expected emissions reduction benefits, and the detail around key technical challenges. We’re excited to discuss the outputs with the industry and explore how we can collectively accelerate the uptake of decarbonisation solutions across a range of fleets and vessel types.”
