🔍 Key Concepts

• International Regulations for Preventing Collisions at Sea (COLREGS) – Annex I and Part C (Lights and Shapes) • Meaning of red all‑round lights vs red over red vs multiple reds in a vertical line • Differences between not under command, constrained by draft, aground, and restricted in ability to maneuver

💭 Think About

• First recall which special vessel statuses are indicated by red lights and what their slogans or memory aids are. • Think about which vessel’s condition is so serious that it needs a very strong visual warning to all other traffic at night. • Match each answer choice to the specific light pattern (number, color, and arrangement) that you remember from the Rules of the Road diagrams.

✅ Before You Answer

• Verify which status is remembered by the phrase “red over red” and how many lights that actually uses. • Check which vessel type is associated with three all‑round red lights in a vertical line in the International Rules diagrams, and what that says about her ability to maneuver. • Confirm that you are distinguishing between day shapes (balls, diamonds, cylinders) and night lights, and are not mixing the two when you picture each vessel.