🔍 Key Concepts

• Annex I and Annex II of the International Regulations for Preventing Collisions at Sea (COLREGS) as they relate to special lights • Which vessels use flashing yellow lights or yellow towing lights and under what circumstances • Differences between international-only signals and those used in inland waters or by specific nations (like U.S. submarines)

💭 Think About

• For each vessel type listed, think about whether its special lighting includes a yellow light and if so, what kind (flashing, all-round, towing, etc.) • Ask yourself: which of these vessel types has special lights that are not defined by the International Rules as yellow, or may use a different color scheme? • Consider: when a vessel is pushing or towing, what color is used to indicate the towing connection or stern light in international waters?

✅ Before You Answer

• For purse seiners, verify in the fishing vessel lighting rules what color their special additional lights are • For air cushion vessels in non-displacement mode, double-check the color of the all-round flashing light they display • For towing vessels pushing ahead, confirm whether the stern/towing light is yellow under the International Rules, and then compare that to the remaining options