Question 31 RVR01 - Master of Unlimited Tonnage

The Correct Answer is A **Explanation for Option A (Correct):** Option A, "Assist in taking whatever action is necessary to avoid collision," is correct because it directly reflects Rule 17(b) of the International Regulations for Preventing Collisions at Sea (COLREGs), which applies to both international and inland waters (via incorporation into relevant inland rules). Rule 17 is titled "Action by the Stand-on Vessel." While the stand-on vessel normally must maintain course and speed (Rule 17(a)(i)), Rule 17(b) is the exception that applies when collision is imminent or inevitable: "The stand-on vessel **may** take action to avoid collision by her manoeuvre alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in compliance with these Rules." More critically, Rule 17(c) states the mandate for immediate danger: "When, from any cause, the stand-on vessel finds herself so close that collision cannot be avoided by the action of the give-way vessel alone, she **shall** take such action as will best aid to avoid collision." Therefore, when two vessels are in immediate danger of collision, the stand-on vessel is required to abandon its stand-on status and actively assist in avoiding the danger. **Explanation of Incorrect Options:** * **B) Abandon ship:** This is an extreme measure taken only after a collision has occurred or is absolutely certain and immediate, and only if ordered by the master. It is not the mandated action to *avoid* a collision. * **C) Hold course and speed until the danger of collision is past and clear:** This is the primary duty of the stand-on vessel (Rule 17(a)(i)), but this duty is expressly revoked and superseded by Rule 17(c) when immediate danger of collision exists. Continuing to hold course and speed under imminent threat is negligence. * **D) Sound a distress signal:** A distress signal (such as a continuous sounding of the foghorn, or SOS) is used when a vessel or person is in grave and imminent peril and requires immediate assistance. While the situation is dangerous, the primary, mandatory action dictated by COLREGs is maneuvering to avoid the collision (Rule 17(c)), not simply signaling distress. Maneuvering is required alongside any appropriate danger signals.