COLREGs Part B: Steering and Sailing
The Rules That Guide Ships Away From Collision The International Regulations for Preventing Collisions at Sea (COLREGs) provide the international framework for preventing collisions between vessels. Part B — Steering and Sailing is at the heart of this framework, covering Rules 4–19 . It explains how vessels should conduct themselves in different visibility conditions, when vessels are in sight of one another, and when visibility is restricted. For a deck officer, Part B is not simply a collection of rules to memorize. It provides a structured way to observe traffic, assess collision risk, determine responsibilities, and take appropriate action. CONDUCT IN ANY CONDITION OF VISIBILITY Rules 4–10: The Foundation of Collision Avoidance The first section of Part B contains Rules 4–10 and applies in any condition of visibility . These rules establish fundamental principles that every vessel must follow regardless of whether navigation takes place in clear weather, darkness, rain,...