Question 22 OSV01 - Master/Chief Mate - Offshore Supply Vessels

The Correct Answer is A **Why Option A is Correct:** Option A states that a traffic separation zone (TSZ) "separates traffic proceeding in one direction from traffic proceeding in the opposite direction." This is the precise definition and primary function of the separation zone within a Traffic Separation Scheme (TSS), as outlined in the International Regulations for Preventing Collisions at Sea (COLREGs), Rule 10 (Traffic Separation Schemes). The TSZ is the neutral area or buffer that divides the traffic lanes, ensuring ships moving in opposing directions are kept apart to minimize the risk of head-on collisions. **Why Other Options Are Incorrect:** * **Option B (is located between the scheme and the nearest land):** The area between the TSS and the adjacent coast (nearest land) is known as the *inshore traffic zone*. While this zone is part of the overall scheme area, it is distinct from the traffic separation zone, which is the physical separator between the opposing traffic lanes. * **Option C (is designated as an anchorage area):** Traffic separation zones are explicitly designated as areas to be avoided by vessels, particularly for anchoring, fishing, or similar activities that impede the flow of traffic. Anchorage areas are designated outside the main scheme. * **Option D (contains all the traffic moving in the same direction):** The area that contains traffic moving in the same direction is called a *traffic lane* (or separation lane). The traffic separation *zone* is the boundary line or buffer between two opposing traffic lanes, not the lane itself.