Concurrent Technical Session 5C-1: New Sterntubeless Ship Design Reduces Carbon Footprint with the Lowest Operating Costs
José Duarte
The concept of a ship design that does not require a sterntube, lowers ship owner maintenance costs, cuts complexity, reduces risk, and even provides the possibility of more cargo space could sound too good to be true. But the T-BOSS evolution of the propeller shaft line design is close to being built. This new design can be all of these, and better support simplified compliance with environmental-focused regulations, such as the Energy Efficiency Design Index (EEDI), through the properties of the T-BOSS design using seawater-lubricated bearings. A consortium of major shipping industry players called the Blue Ocean Alliance has developed the evolutionary sterntubeless ship concept. The Blue Ocean Alliance brings together unrivalled maritime industry expertise, with seawater-lubricated bearings pioneer Thordon Bearings, systems integrator Wärtsilä, classification society ABS, the School of Naval Architecture & Marine Engineering faculty of the National Technical University of Athens (NTUA), and naval architecture firm SDARI (Shanghai Merchant Ship Design & Research Institute CSSC). The paper will present the technical details of the sterntubeless propeller shaft system design, in which the vessel’s sterntube cooling tank is replaced with a dry irregularly shaped chamber, thus allowing for inspection and maintenance of a seawater-lubricated single bearing and seal from inside the ship, while afloat, without any need to withdraw the shaft. These innovations enable ship owners and shipyards to eliminate propeller shaft oil emissions, simplify maintenance, lower operational costs and comply with all existing Class rules.
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Concurrent Technical Session 5C-2: Embracing Today’s Technology for a Greener Tomorrow!
Karl Wirén
Kongsberg Maritime is dedicated to partnering with our customers on their journey towards decarbonization, utilizing today’s technologies to create a sustainable future. This presentation will delve into the integration of various energy efficiency measures that can significantly reduce emissions by 25% to 50% onboard sailing ships. We will highlight how a holistic approach, leveraging currently available technologies, can lead to substantial environmental benefits. The presentation will feature a video that demonstrates the practical application of technologies and their impact on reducing emissions. By showcasing real-world examples and case studies, we aim to illustrate the tangible benefits of adopting a multi-dimensional strategy to energy efficiency. Attendees will gain valuable insights into how Kongsberg Maritime’s solutions can be seamlessly integrated into their operations to achieve significant emission reductions. Join us to explore how Kongsberg Maritime’s commitment to sustainability and innovation can support your decarbonization goals. Discover how our expertise and cutting-edge technologies can help you navigate the complexities of the energy transition, ensuring a greener tomorrow for the maritime industry. Together, we can make a meaningful impact on the environment by embracing the technologies available today.