Question 26 GLI08 - Limited OUPV

The Correct Answer is C ### Explanation of Correct Option (C) **Why Option C is correct:** When underway in fog and you hear a signal of two prolonged blasts from a vessel ahead, this indicates the other vessel is underway but stopped (not making way through the water) or is a towing vessel displaying special signals. Regardless of the exact meaning of the two-prolonged-blast signal, the crucial context is that you are in restricted visibility (fog) and risk of collision exists. According to both the International Regulations for Preventing Collisions at Sea (COLREGs) and Inland Rules (Rule 35, which covers sound signals in restricted visibility): 1. **You must maintain fog signals:** Your vessel, being underway and making way, is required to sound the appropriate fog signal (one prolonged blast at intervals of not more than two minutes) until you sight the other vessel or the restricted visibility lifts. Stopping your required fog signal (as suggested by options A, B, and D) is a violation of the rules and dangerous. 2. **Whistle Maneuvering Signals (Rule 34) are not used in fog:** The maneuvering signals (short blasts indicating intentions like passing or altering course) are reserved for vessels in sight of one another. When you cannot see the other vessel, you do not use maneuvering signals to indicate a course change. Instead, you follow the requirements of Rule 19 (Conduct of Vessels in Restricted Visibility), which emphasizes slowing down, stopping, and determining the location of the other vessel before making any drastic course changes. Therefore, you should continue sounding your mandatory fog signals until the situation is resolved or the vessel is sighted. ### Explanation of Incorrect Options **A) sound whistle signals only if you change course** * **Incorrect:** This is dangerously incomplete. It suggests you should stop sounding your required fog signals. Furthermore, if you *do* change course while in restricted visibility, you are not supposed to use maneuvering whistle signals (Rule 34), but rather follow Rule 19, which mandates action to be taken only after the risk and location are determined. **B) sound two blasts and change course to the left** * **Incorrect:** This is a combination of two significant errors. First, sounding two blasts (indicating a change of course to port) is a maneuvering signal (Rule 34) which is strictly forbidden when vessels are not in sight of one another. Second, drastically changing course (especially turning left/port, which could turn you into the path of the other vessel if you don't know their exact location or direction) is a dangerous maneuver in fog before the risk is assessed and the other vessel's position is known (Rule 19). **D) not sound any whistle signals until the other vessel is sighted** * **Incorrect:** This is a direct violation of COLREGs/Inland Rule 35. Since you are underway in fog, you are required to sound the appropriate fog signal (one prolonged blast every two minutes) regardless of what other vessels are doing. Stopping your fog signal makes your presence unknown to other nearby vessels.