🔍 Key Concepts

• Stern light vs. towing light – color, arc of visibility, and purpose • What additional lights are required when a vessel is towing astern under the Navigation Rules (International & Inland) • Difference between normal power-driven vessel lights and towing vessel lights

💭 Think About

• First, picture what a normal power-driven vessel underway shows at the stern. What light is there, and what does it indicate? • Now ask: when that same vessel is engaged in towing astern, what extra information must its lights communicate to other vessels about its status? • Consider whether the required stern arrangement uses one light or a combination, and whether the special towing light replaces or is shown in addition to the regular stern light.

✅ Before You Answer

• Check the definition of a towing light in the Navigation Rules (color and direction). • Verify whether the towing configuration requires the vessel to keep its normal stern light or to show only towing lights instead. • Confirm if the correct arrangement describes a special yellow light relative to the usual white stern light (above, below, or alone).