What must a vessel using a Traffic Separation Scheme (TSS) do while navigating?

A vessel navigating in a Traffic Separation Scheme (TSS) is required to proceed in the correct traffic lane in the direction of flow. This is crucial for maintaining organized and safe navigation, minimizing the risk of collisions in busy waterways. The rules governing TSS are part of the COLREGs and are designed to facilitate the orderly movement of vessels, especially in areas where marine traffic is dense.

Following the correct lane ensures that all vessels are moving in a predictable manner, which is essential for situational awareness and safety. In a TSS, the designated lanes are established to direct traffic effectively, much like traffic lanes on a road, making it much easier for vessels to anticipate the movements of others.

In contrast, freely crossing lanes, exiting the scheme at any point, or anchoring within the TSS would disrupt this order and could lead to dangerous situations, increasing the likelihood of accidents. Each of these actions would violate the regulatory framework established to promote safety and efficiency in maritime navigation.