Question 11

The Correct Answer is B. Option B is correct because it accurately reflects the responsibilities of a stand-on vessel under both the International Regulations for Preventing Collisions at Sea (COLREGs, Rule 17) and the Inland Rules. The stand-on vessel's primary duty is to keep its course and speed (Rule 17(a)(i)). This predictability allows the give-way vessel (the other vessel) to execute its maneuver safely. However, the rule also specifies that the stand-on vessel *may* take action to avoid collision as soon as it becomes apparent that the vessel required to keep out of the way is not taking appropriate action (Rule 17(b)). Furthermore, the stand-on vessel *must* take action when collision cannot be avoided by the give-way vessel's action alone (Rule 17(c)). Here is why the other options are incorrect: * **A) required to give-way in a crossing situation:** This is incorrect. The stand-on vessel is, by definition, the vessel required to **maintain** its course and speed. The vessel that is required to take early and substantial action to keep clear is the **give-way** vessel (Rule 15 for crossing situations). * **C) required to sound the first passing signal in a meeting situation:** This is incorrect. In a meeting (or head-on) situation, both vessels are typically required to alter course to starboard to pass port-to-port, making them both "give-way" vessels in practice (Rule 14). There is no specific rule designating a stand-on vessel in a meeting situation, and the first vessel to sound a passing signal (one short blast for port-to-port) is simply initiating the maneuver, not confirming a stand-on status. * **D) free to maneuver in any crossing or meeting situation as it has the right of way:** This is incorrect. While the stand-on vessel has the "right of way" initially (the right to hold its course and speed), it is **not** free to maneuver. Its strict obligation is to maintain course and speed to aid the give-way vessel's predictable maneuver. It is only permitted (and later required) to maneuver once the risk of collision becomes immediate.