Question 15 GLI06 - Master or Mate of LT 100 GRT

The Correct Answer is A. ### Why Option A is Correct Option A ("Neither vessel is the stand-on vessel.") is correct because when two vessels are crossing in fog and are **not in sight of one another**, the collision regulations (specifically Rule 19 - Conduct of Vessels in Restricted Visibility) supersede the rules governing encounters in sight of one another (Rules 12-18). Rule 19 does **not** establish a "stand-on" and "give-way" relationship based on relative bearing (like the crossing rule, Rule 15). Instead, Rule 19 requires that: 1. **Every vessel shall proceed at a safe speed** adapted to the prevailing circumstances and conditions of restricted visibility. 2. **A vessel which hears, apparently forward of her beam, the fog signal of another vessel... shall reduce her speed to the minimum necessary to keep her course and shall if necessary take all her way off and in any event navigate with extreme caution until danger of collision is over.** In this scenario (crossing in fog, not in sight), both vessels are governed by the strict requirements of Rule 19, meaning both must take immediate and cautious action (slow down, stop if necessary) to avoid collision. Therefore, neither vessel has the right or obligation to "stand on" as defined by the standard steering and sailing rules. ### Why Other Options Are Incorrect **B) The vessel which hears the other vessel's fog signal first** * **Incorrect.** The time at which a signal is heard does not confer stand-on status. The hearing of a signal ahead of the beam triggers the immediate requirement for both vessels to slow down or stop under Rule 19(e). **C) The vessel which has the other on her own starboard side** * **Incorrect.** This describes the *give-way* vessel under the standard Crossing Rule (Rule 15), but Rule 15 only applies when vessels are **in sight** of one another. Since the vessels are crossing in fog and not in sight, Rule 19 applies, nullifying the standard crossing definitions. **D) The vessel which has the other on her own port side** * **Incorrect.** This describes the *stand-on* vessel under the standard Crossing Rule (Rule 15), but, as explained above, Rule 15 does not apply in conditions of restricted visibility where vessels are not in sight. Both vessels must adhere to the precautionary measures of Rule 19.