Concurrent Technical Session 3C-A:  PEPMDT-Propulsion, Emission & Preventative Maintenance Digital Twin
Dr. Iain Martin & Liam Bills, Gastops Ltd. 

The use of digital twin technology to evaluate ship performance has proved invaluable for shipbuilders, allowing designers to evaluate critical design decisions using a wholistic digital model of the vessel. In partnership with Seaspan Vancouver Shipyards, Gastops has sought to further extend the use of digital twins and has developed a “propulsion, emission, and preventative maintenance digital twin” (PEPMDT), a tool for designers and operators to evaluate not only ship performance, but also provide emissions and component wear predictions. The PEPMDT features a complete diesel-electric ship propulsion system model, including diesel generators, power distribution, thruster/propeller performance and hull dynamics, all integrated with diesel engine emission modelling, oil degradation modelling, and bearing wear modelling. Using the PEPMDT, designers can investigate how design decisions will impact ship performance, emissions production and potential component wear, allowing analyses on the trade-offs between performance, fuel efficiency, emissions and degradation, all before the commencement of shipbuilding activities. For operators and maintainers, the PEPMDT provides predictions of component remaining useful life (RUL), allowing for implementation of condition-based maintenance and general avoidance of common degradation modes. Preliminary results indicate the PEPMDT can be used to identify operating regions that can reduce emission production, extend equipment life, and maintain a desired performance for the vessel. The completed demonstrator raises potential future work to investigate optimization of marine system operation across different disciplines, in addition to increasing the fidelity and breadth of the modules in the PEPMDT architecture. The proof-of-concept PEPMDT therefore provides a novel tool that can be used to enhance the ship design process while simultaneously arming operators and maintainers with knowledge to allowing planning for preventative maintenance to avoid costly equipment failures. 

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Concurrent Technical Session 3C-B: The Evolution of Energy Storage Systems – Leverage advancing technologies to power electric and hybrid vessels and strive towards zero-emission operations.
Maryam Ebrahimian, Corvus Energy

Worldwide over the past decade, Corvus Energy has provided battery energy storage systems (ESS) for over 1,000 marine electrification projects, including all-electric, hybrid and plug-in hybrid vessels and port applications and totaling over 9 million system operating hours. This extensive experience based on actual system performance provides insight into the complex technology and lifecycle decision-making challenges facing vessel operators and owners as they embark on the decarbonization of their fleets. 

This presentation and case study outlines key factors to consider when selecting a battery ESS for a project hybridization/electrification and maps out how ship owners can leverage evolving battery cell and ESS technology. 

Key Points: 

1. Technological Advancements: Uncover the latest breakthroughs in energy storage technologies and their impact on enhancing the efficiency and performance of electric and hybrid vessels. 

2. Navigating Towards Zero Emissions: Discuss strategies and innovations in leveraging ESS to facilitate the transition towards zero-emission maritime operations, aligning with global environmental goals. 

3. Operational Excellence: Explore how advancements in ESS contribute to operational excellence, enabling vessels to achieve greater reliability, autonomy, and flexibility in their energy management. 

4. Case Studies: Illustrate real-world applications and success stories of electric and hybrid vessels powered by cutting-edge energy storage systems, showcasing tangible results and lessons learned. 

5. Future Trends: Look ahead to the future of ESS in maritime applications, highlighting emerging trends and potential advancements that will further shape the industry's sustainable evolution.