Energy efficiency is a critical aspect of modern maritime operations, reflecting the industry’s commitment to sustainability, cost-effectiveness, and regulatory compliance. With global shipping accounting for a significant share of greenhouse gas emissions, improving the energy efficiency of vessels has become a significant focal point for ship owners, operators, and governing bodies. Embracing energy-efficient practices not only benefits the environment but also enhances operational performance and reduces fuel costs, providing a competitive advantage. This web page explores the foundational aspects, technological solutions, key management strategies, and the evolving regulatory landscape that shape energy efficiency in maritime operations.