Question 16 UFV02 - Mate - Uninspected Fishing Vessels

The Correct Answer is C. **Explanation for Option C (Correct Answer):** The steering and sailing rules for vessels in restricted visibility are defined in Rule 19 of the International Regulations for Preventing Collisions at Sea (COLREGs), which applies globally to both international and inland waters (though inland rules may have slight variations, they are fundamentally based on Rule 19). Rule 19 explicitly addresses the conduct of vessels **"navigating in or near an area of restricted visibility."** The application of these rules is triggered by the environmental condition (restricted visibility) and the vessel's proximity to it, ensuring that vessels prepare and act proactively before entering or while operating within such conditions. **Explanation of Why Other Options are Incorrect:** * **A) only if they have operational radar:** This is incorrect. While operational radar (and the proper use of it) is a key component of Rule 19 (specifically sub-paragraphs (d) and (e)), the rules regarding speed, fog signals, and immediate action when hearing a fog signal apply to **all** vessels in restricted visibility, regardless of whether they possess or are utilizing radar. * **B) in sight of one another in fog:** This is incorrect. If vessels are in sight of one another, they are no longer operating under the rules for "restricted visibility" (Rule 19) but transition immediately back to the rules for "vessels in sight of one another" (Rules 11–18). Restricted visibility rules apply when vessels cannot see each other due to environmental conditions (fog, heavy rain, etc.). * **D) only if they are showing special purpose lights:** This is incorrect. Special purpose lights (such as lights for towing, fishing, dredging, or not under command) identify the vessel's status or operation, but the requirement to follow the rules for restricted visibility (such as sounding fog signals and reducing speed) applies to *all* vessels, irrespective of their operational status or the lights they display.