This Circular provides a comprehensive overview of the updated regulations and best practices for the maritime transport of electric vehicles, lithium-ion batteries, and Battery Energy Storage Systems. It highlights critical changes within the IMDG Code Amendment 42-24 and integrates key risk management insights from the International Union of Marine Insurance (IUMI). The paper emphasizes the inherent risks of thermal runaway and fire propagation associated with these energy sources, outlining specific requirements for classification, packaging, labeling, stowage, and emergency response, ultimately aiming to ensure stringent safety measures across the supply chain.