Question 22 ONC02 - Second Mate/Third Mate Unlimited Tonnage

The Correct Answer is A **Explanation for Option A (Correct Answer):** Option A ("separates traffic proceeding in one direction from traffic proceeding in the opposite direction") is the correct definition of a Traffic Separation Zone (TSZ). According to both the International Regulations for Preventing Collisions at Sea (COLREGs) and Inland Rules, a TSZ is the area within a Traffic Separation Scheme (TSS) that is specifically designated to separate opposing streams of traffic. Its primary function is to prevent head-on collisions and increase safety by providing a buffer between traffic lanes (or traffic lanes and restricted areas). **Explanation for Incorrect Options:** * **Option B (is located between the scheme and the nearest land):** This describes a **Coastal Traffic Zone** or an inshore traffic zone (ITZ) where traffic is permitted to navigate outside the TSS, specifically between the TSS and the coast. The TSZ is the separation area *within* the scheme, not the zone between the scheme and the land. * **Option C (is designated as an anchorage area):** Traffic Separation Schemes are areas where navigation rules are strictly applied, and vessels are generally discouraged or prohibited from anchoring, except in emergencies. Dedicated anchorage areas are designated separately and are not the primary function or definition of a TSZ. * **Option D (contains all the traffic moving in the same direction):** This describes a **Traffic Lane** (or Traffic Separation Lane). A traffic lane is the area where vessels must proceed in the same direction. The TSZ is the area that *separates* these lanes.