Question 2 ONC01 - Master/Chief Mate Unlimited Tonnage

The Correct Answer is A **Explanation for A (flashing blue light):** In the United States, regulations governing vessel lighting and signaling (specifically the Inland Rules of the Road) permit law enforcement vessels, when engaged in enforcement duties, to display a flashing blue light. This light is a recognized signal intended to identify the vessel as an official police or patrol craft. **Why the other options are incorrect:** * **B) flashing amber light:** A flashing amber (or yellow) light is typically used in inland waters to indicate certain special purpose vessels, such as dredges, towing vessels pushing ahead (in certain circumstances), or vessels restricted in their ability to maneuver. It is not the designated identification signal for a law enforcement vessel. * **C) blue flag:** Flags are primarily used for international maritime signaling (the International Code of Signals) or for specific procedural statuses (like the "Alpha" flag indicating divers below). A plain blue flag is not a standard, legally recognized navigational signal for identifying a law enforcement vessel while underway. * **D) flashing red light:** A flashing red light is generally associated with emergency vehicles on land. On the water, a steady red light is a standard sidelight (port side). Flashing red lights are not the legally prescribed identifier for U.S. law enforcement boats.