🔍 Key Concepts

• Rule 27 (Vessels Not Under Command or Restricted in Their Ability to Maneuver) – patterns of all-round red and white lights • Rule 28 (Vessel Constrained by Her Draft) – special pattern of all‑round red lights • Rule 24 (Towing and Pushing) – how many masthead (white) lights are shown in a vertical line for different towing situations

💭 Think About

• Count how many all‑round white lights are in a vertical line and compare that pattern to the required lights for towing vessels in Rule 24. • Ask yourself: which of the answer choices would normally show multiple white masthead lights in a vertical line rather than mainly red lights? • For each option, picture its typical night‑time lights and see which one matches a stack of white lights with a separate red light.

✅ Before You Answer

• Verify which vessel types in the answers use all‑round red lights only (no white) as their primary special signal. • Verify which vessel type requires two or more white masthead lights in a vertical line when length or tow length increases. • Check whether a law enforcement vessel has any special fixed light pattern in the Navigation Rules (apart from flashing blue, which is not shown here).