🔍 Key Concepts

• Navigation Rules – Lights and Shapes (Part C), especially the patterns for different types of vessels • The specific light configuration for a vessel restricted in her ability to maneuver, including when engaged in diving operations • How the light pattern for a pilot vessel and for a trawling vessel differs from the red‑white‑red pattern

💭 Think About

• For each choice, picture (or sketch) the required lights at night: what colors, how many, and in what arrangement are specified in the Rules? • Ask yourself: which vessel type is associated with the classic "red over white" pattern only, and which is associated with "red‑white‑red"? • Consider whether any one vessel type listed here is required to show this exact three‑light vertical pattern, or if more than one could correctly match it.

✅ Before You Answer

• Verify in the Navigation Rules the exact wording for lights of a vessel engaged in diving operations (usually treated as restricted in ability to maneuver). • Confirm the pilot vessel lights: what colors and how many, and whether they are vertical or all‑round lights with a different pattern. • Check the trawling vessel lights pattern and ensure you note if it is green over white or red over white, and how many lights are required.