Question 3 ONC07 - OUPV-Near Coastal

The Correct Answer is A **Explanation for A (A law enforcement vessel):** According to the Inland Navigational Rules (33 CFR Subchapter E), a flashing blue light is a signal reserved for vessels operated by law enforcement agencies. This light is used to signify that the vessel is actively engaged in law enforcement duties, such as patrolling, enforcing rules, or conducting emergency responses. **Explanation for B (A work boat):** Work boats typically display specific day signals or lights (like an all-round white light or fixed red lights) depending on their operation (e.g., restricted in ability to maneuver, dredging). A flashing blue light does not designate a generic work boat. **Explanation for C (A vessel engaged in a race):** Vessels engaged in races do not use specific prescribed navigational lights or signals solely to denote their participation in a race under the Inland Rules. **Explanation for D (A vessel transferring hazardous cargo):** Vessels carrying or transferring hazardous cargo do not display a flashing blue light. They must adhere to specific safety and operational requirements, but this signal is not one of them.