Question 20 RVR03 - Mate of LT 500-1600 GRT

The Correct Answer is B **Explanation for Option B (Correct):** Option B is correct based on the **Inland Navigational Rules (33 CFR Subchapter E)**, specifically Rule 9 (Narrow Channels). Rule 9(b) states: "A vessel of less than 20 meters in length or a sailing vessel shall not impede the passage of a vessel that can safely navigate only within a narrow channel or fairway." While this scenario involves crossing a river (which is a narrow channel), the most specific rule addressing movement within these channels, particularly when one direction is considered "upbound" or "ascending," is often interpreted locally and historically, but the fundamental priority is given to vessels navigating *along* the channel and those that are heavily constrained. In a typical narrow river crossing scenario, vessels proceeding *along* the channel generally maintain priority. However, the most direct and overriding rule in this specific context (vessel crossing vs. vessel ascending a narrow channel) comes from Rule 9(c)(i) which states that a vessel **shall not cross a narrow channel or fairway if such crossing impedes the passage of a vessel which can safely navigate only within that channel or fairway.** Since your vessel is *crossing* the river and the other vessel is *ascending* (navigating along) the narrow channel, the ascending vessel has priority, and you are the vessel directed not to impede its passage. Therefore, the vessel ascending the river has the functional right of way. **Explanation for Incorrect Options:** **A) You are required to propose the manner of passage.** This is incorrect. While collision avoidance requires communication (proposing signals), your fundamental duty is non-impedance. Since you are the crossing vessel impeding the vessel constrained to the narrow channel, you do not have the primary right or duty to dictate the passage; rather, you must keep out of the way. **C) Your vessel has the right of way, but you are directed not to impede the other vessel.** This is a contradictory statement and is incorrect. If you are directed not to impede the other vessel (as per Rule 9(c)(i)), you do not have the right of way. The right of way belongs to the vessel that must be given passage (the ascending vessel). **D) The other vessel must hold as necessary to allow you to pass.** This is incorrect. Because the other vessel is ascending (navigating along) the narrow channel, and your vessel is crossing, the Rules require your vessel (the crossing vessel) to keep clear and not impede the ascending vessel. The ascending vessel is the stand-on vessel in this situation, and the crossing vessel (your vessel) is the burdened/give-way vessel.