A Review of Ship Path Planning for Autonomous Navigation: From Model-Driven Methods to Deep Reinforcement Learning (opens in a new tab)
This paper reviews ship path planning for autonomous navigation, highlighting its complexity due to collision risks, efficiency, COLREGs compliance, and environmental factors. It compares model-driven methods (search-based, optimization) with deep reinforcement learning approaches, focusing on decision-making, safety, and multi-vessel interactions. Key challenges include rule formalization, partial observability, benchmark inconsistencies, and limited real-world validation. Future priorities involve safety constraints, digital twins, meta-learning, and scalable multi-agent coordination for reliable deployment.