### **Oral Flashcard for ROR (Rules of the Road)** **Question:** What is the purpose of ROR? **Answer:** To prevent collisions by defining navigation rules for vessels. **Question:** What are the two main types of vessels in a crossing situation? **Answer:** Stand-on vessel (maintains course) and give-way vessel (alters course). **Question:** What light configuration does a power-driven vessel display at night? **Answer:** Masthead light(s), sidelights (red/green), and a sternlight. **Question:** What does a single prolonged blast indicate? **Answer:** A vessel is leaving a dock or underway.
