Concurrent Technical Session 1C-A: Environmental Certification and Beyond
Manon Lanthier, Green Marine 

Green Marine's Route to Environmental Certification and Beyond. The maritime industry is at a crossroads, navigating the intersection of technology, environmental impact, and the imperative for sustainability. Green Marine, a leader in marine environmental certification, proposes a presentation to illuminate a path toward sustainable marine transportation. Present in North America for over 16 years and Europe for over four years, Green Marine is uniquely positioned to offer insights and practical solutions for achieving sustainable maritime operations. Our certification program serves as a comprehensive roadmap, guiding companies – both seaside and landside – through the intricate landscape of sustainable practices. Presenting at Mari-Tech 2024 provides an opportunity to share our experience in these key areas: Defining Sustainability: Delving into the core principles of sustainability, outlining the key metrics and benchmarks crucial for success. Elaborate on how a clear definition of sustainability serves as the foundation for meaningful progress. Taking the Next Steps: Providing practical guidance, we address challenges companies face in transitioning towards sustainability and offer actionable steps to initiate and advance their journey. Effective Implementation: Our presentation will emphasize effective and credible methods of incorporating sustainability into marine operations, sharing best practices and success stories. Partnerships for Success: Highlighting the importance of collaborative efforts, we showcase the power of forging partnerships within and beyond the industry to address global challenges. A roadmap to continual improvement: Presenting longitudinal results, focusing on our GHG performance indicator, and offering a detailed analysis of our program's impact on reducing carbon footprints. Our presentation aims to set the stage for discussions on sustainable marine transportation, contributing to Mari-Tech's mission of exploring leading-edge applications, fostering innovation, and inspiring a collaborative approach. As the maritime industry navigates change, Green Marine stands ready to share insights, experiences, and solutions, contributing to steering the industry toward a sustainable future. 

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Concurrent Technical Session 1C-B: Arctic Operations for Equipment and Vessels
Chad Oldfield, Vard Marine Inc. 

Growler-Ship Impacts in Waves  

Growlers in otherwise open water present a distinct risk to vessels, particularly when waves are present.  Waves can hide “small” pieces of hard glacial ice while causing impacts with them to be more intense, or to occur at locations above a ship’s ice belt.  To explore this risk, we developed a novel time-domain simulation methodology that combines the wave-induced motions of the ship and of a growler to predict impact locations and intensities.  A combination of linear and nonlinear methods captures the relevant physics efficiently.  When repeated for several thousand growler encounters, this enables the impact probability to be mapped onto the hull.  Vulnerable areas of the hull are identified by showing only impacts that are hard enough to exceed the local structural capability.  Operational guidance to mitigate the risks is obtained by repeating this at different speeds and headings. Applying both mitigations in combination improves the ability to design and safely operate vessels in polar waters where growlers may be present in demanding sea conditions. 

This presentation is of the SMC 2022 paper “Growler-Ship Impacts in Waves”.