🔍 Key Concepts

• Bunkering means taking on fuel, usually while the vessel is alongside a dock • The Navigation Rules light combinations like red over white and two red lights already have specific meanings (e.g., fishing, not under command) • Oil/fuel transfer (bunkering) signals are covered in U.S. regulations such as 33 CFR Part 155 and local port rules, not in the standard steering and sailing Rules

💭 Think About

• Ask yourself: is bunkering a navigation status (like fishing, towing, not under command) or a cargo/fuel transfer operation alongside? • Look at each multi‑light option and recall what standard vessel status it normally indicates under the Navigation Rules—would bunkering use one of those, or a simpler signal? • Consider what harbor and terminal personnel need to see at night to know that fuel transfer is in progress—would they need a distinctive combination or a single, unmistakable color?

✅ Before You Answer

• Verify the normal meaning of red over white and two red lights under the Navigation Rules; eliminate any options that clearly indicate a different vessel status. • Check whether yellow appears anywhere in the standard bunkering/transfer signal in your study materials or 33 CFR references. • Confirm whether the required bunkering signal at night is one light or a combination of lights; that will narrow the choices quickly.