Question 8 RVR04 - Master or Mate of LT 200 GRT

The Correct Answer is A ### 1. Why Option A (an alternately flashing red and yellow light) is correct: The question specifies an **INLAND ONLY** law enforcement vessel. The operation and lighting requirements for such vessels are generally governed by the Inland Rules (33 CFR Subchapter E). According to 33 CFR § 88.07, **Law Enforcement Vessels (Inland)**: > "Law enforcement vessels, when engaged in direct law enforcement activities, and alternatively to the blue light specified in [another section], may exhibit an alternately flashing red and yellow light signal." Therefore, for an inland law enforcement vessel, the authorized alternatives to a flashing blue light are either another flashing blue light visible all around the horizon (as the primary designation) or an **alternately flashing red and yellow light**. ### 2. Why the other options are incorrect: * **B) a high intensity flashing white light (strobe):** While high intensity flashing white lights are used for identifying air-cushion vessels (WIG craft) or sometimes for security zones, they are not the authorized alternative to the blue light specifically for inland law enforcement vessels under 33 CFR § 88.07. Flashing white lights are also used on the high seas to signify compliance with specific rules (e.g., vessel traffic services), but not as the alternative specified here. * **C) two amber lights in a horizontal line:** Amber (or yellow) lights are typically used on vessels restricted in their ability to maneuver (RIM), towing vessels (at the stern), or vessels engaged in dredging/surveying operations. Two amber lights in a horizontal line are not the authorized substitute for a law enforcement blue light designation. * **D) a fixed green light over a red flashing light:** This combination of lights is not authorized for law enforcement vessels. A fixed green light over a fixed red light is the combination used for vessels engaged in trawling. A flashing red light is used in specific regulatory contexts (e.g., submarine warning), but not in this combination for law enforcement identification.