Question 2 GLI03 - Master-LT 500-1600 GRT

The Correct Answer is A **Explanation for Option A (flashing blue light):** In many jurisdictions, particularly under U.S. Inland Rules and specific state regulations (which align with common practice for "inland only" scenarios), a law enforcement vessel may display a rapidly **flashing blue light** when engaged in official duties. This distinctive signal is reserved solely for federal, state, or local law enforcement vessels and serves to indicate their official status and authority. **Why Option B (flashing amber light) is incorrect:** A flashing amber (or yellow) light is typically used to indicate a vessel that is performing work (e.g., dredging, towing operations requiring special caution) or is restricted in its ability to maneuver. It is not the designated distinctive signal for law enforcement authority. **Why Option C (blue flag) is incorrect:** A blue flag, or "blue code" flag, is generally used on recreational or commercial boats to indicate that divers are down. It has no standard meaning as a law enforcement signal. **Why Option D (flashing red light) is incorrect:** A flashing red light is typically reserved for emergency vessels (like fire boats or some search and rescue craft), or, more commonly under navigation rules, it may indicate a hazardous situation, such as special operations at a dredge or specific markings on aids to navigation. It is not the designated distinctive signal for routine law enforcement vessels.