What is the primary purpose of the lines of demarcation in maritime regulations?

The primary purpose of the lines of demarcation in maritime regulations is to delineate waters that require compliance with different navigation rules. These lines serve as critical boundaries that inform mariners about which set of rules, such as the International Regulations for Preventing Collisions at Sea (COLREGS) or inland navigation rules, apply to them at any given time. Understanding these distinctions is vital for safe navigation and helps prevent accidents by ensuring that vessels are following the correct navigation protocols that correspond to their specific location. This clarity promotes uniformity in maritime conduct, allowing for safer passage in congested or complex waterways.