Question 47

The Correct Answer is D **Explanation for D (a risk of collision exists):** This scenario describes the fundamental principle for determining a risk of collision, as defined in both the International Regulations for Preventing Collisions at Sea (COLREGs, Rule 7) and the Inland Rules. The principle states that a risk of collision exists if the compass bearing of an approaching vessel does not appreciably change (or if it is closing on a steadily decreasing bearing). If a vessel's bearing remains constant while the distance is decreasing (which is implied by "watching another vessel approach"), the vessels are on a collision course. Therefore, this unchanging bearing is the primary and definitive indicator that a risk of collision exists. **Why other options are incorrect:** **A) a special circumstances situation exists:** "Special Circumstances" (Rule 2) refers to situations not explicitly covered by the rules where ordinary seamanship requires a departure from the rules to avoid immediate danger. While a risk of collision is a dangerous situation, the constant bearing indicator itself does not define the situation as "special circumstances." It simply defines the existence of a risk, which triggers the application of the regular steering and sailing rules (Part B). **B) you are the stand-on vessel:** The determination of which vessel is the "stand-on" (privileged) or "give-way" (burdened) vessel depends on the specific rules related to the type of encounter (e.g., meeting head-on, crossing, overtaking, or restricted visibility). While a risk of collision is necessary before defining roles, the constant bearing only establishes the *risk*; it does not identify the respective responsibilities (stand-on/give-way) which are determined by the relative positions and courses of the two vessels. **C) the other vessel is dead in the water:** If the other vessel were dead in the water (not moving) and you were approaching, its bearing *would* change significantly as you move toward it (unless you were approaching directly along its keel line). Furthermore, the primary implication of a constant bearing is the danger of collision, not the status of the other vessel's propulsion or movement.