Which part of the COLREGs addresses exemptions?

The correct part of the COLREGs that addresses exemptions is found in Part A. This part lays the groundwork for the entire set of rules and includes the applicability and exemptions relevant to certain vessels or situations. Specifically, it outlines the scope of the rules and states under what conditions certain vessels may be exempted from compliance with specific regulations.

While Part B covers the conduct of vessels in various circumstances to prevent collisions, Part C focuses on the lights and shapes used by vessels to signal their identity and status. Part D deals with sound signals and their use in navigation, particularly in restricted visibility. These sections do not include the provisions for exemptions, making Part A the appropriate reference for understanding any exemptions within the COLREGs framework.