From object detection systems to route optimization algorithms, machine learning (ML) technologies are transforming autonomous and smart shipping. BV M&O introduces a guidance note, set to be published by mid-2025, providing recommendations on the assessment of machine learning systems in the maritime and offshore industries. Aligned with ISO standards, the European AI Act, and the Assessment List for Trustworthy Artificial Intelligence (ALTAI), the guidance note emphasizes principles such as human oversight, transparency, explainability, robustness, safety and accuracy. Key topics are presented, including risk management, data governance, ML development and deployment and governance throughout the ML lifecycle.