🔍 Key Concepts

• Rule 27 – Vessels not under command or restricted in their ability to maneuver • How many all-round red lights are shown and how they are arranged (vertical vs. horizontal and total number) • Difference between lights for not under command, restricted in ability to maneuver (including dredging), and towing

💭 Think About

• Compare the number and pattern of red lights shown to the standard patterns in Rule 27—does this match two red, three red, or a combination of red/white/red? • Ask yourself whether towing lights normally involve red all‑round lights, or mainly masthead and sidelights with a yellow towing light abaft the sternlight. • For dredging/restricted vessels, what extra lights (colors and order) are normally required besides red, and are they present in this illustration?

✅ Before You Answer

• Count exactly how many red all‑round lights appear and confirm they are in a straight vertical line. • Verify whether the pattern matches any standard special-vessel configuration in Rule 27 (not under command, restricted in ability to maneuver, dredging). • Confirm whether any required masthead, side, or stern/yellow towing lights for a towing vessel are visible in this simplified exam illustration.