What type of rules does Part C of the COLREGs cover?

Part C of the COLREGs specifically addresses the rules concerning "Lights and Shapes." These rules are essential for ensuring that vessels are properly identified and can communicate their presence and operational status effectively, particularly during nighttime or reduced visibility conditions. By mandating specific lighting configurations and shapes to be displayed during different conditions, these rules contribute to the overall safety of navigation at sea.

Understanding these regulations is crucial for mariners because observing the correct lights and shapes can help in predicting the actions of other vessels, thereby preventing potential collisions. This section of the COLREGs outlines the requirements for vessels of varying types and sizes, including those at anchor, underway, and those engaged in fishing or towing operations.

While other sections of the COLREGs cover important aspects such as sound and light signals, general conduct, and rules applicable in restricted visibility, Part C is focused squarely on the visual identification aspect through lights and shapes, making it a vital component of safe maritime practices.