🔍 Key Concepts

• Vessel engaged in towing or pushing vs vessel restricted in ability to maneuver (RAM) vs vessel not under command (NUC) – which one uses red‑white‑red? • Navigation Rules – lights and shapes (Rules 24–31) and sound signals in restricted visibility (Rule 35). • Difference between day shapes and night lights, and how anchor lights and shapes combine with special lights.

💭 Think About

• First, recall which type of vessel shows three all‑round lights red over white over red and what that means about her ability to maneuver. • For that same vessel, think about what day shape(s) she shows – is it one ball, two balls, three balls, or something else? • Consider whether special identifying lights ever replace the legal requirement to show anchor lights or shapes, or whether they are shown in addition when applicable.

✅ Before You Answer

• Verify in the lights and shapes section which vessel shows red‑white‑red all‑round lights and what day shape(s) are prescribed for that status. • Check Rule 35 to see what fog signal that specific vessel must make: is it like a power‑driven vessel, a vessel at anchor, or something different? • Confirm whether the Rules ever say that a vessel displaying special status lights (like restricted in ability to maneuver) is exempt from anchor signals, or if anchor signals are still required when at anchor.