🔍 Key Concepts
• Review Rule 23 – Power-driven vessels underway, especially the paragraph that covers air-cushion vessels (ACVs) operating in the non-displacement mode.
• Think about what additional all-round light such a vessel must carry in addition to normal power-driven vessel lights.
• Note that the question says BOTH INTERNATIONAL & INLAND, so focus on requirements that are the same in both sets of rules.
💭 Think About
• Ask yourself: When an air-cushion vessel is riding on its cushion (non-displacement), what special status or hazard does it present that might require an extra conspicuous light?
• Compare the listed colors and types (flashing vs steady) with the lights used for other special vessel types (e.g., towing, pilot, law enforcement) and eliminate any that clearly belong to a different category.
• From vessel A’s overtaking position, which all-round special light would still be visible, regardless of aspect, and matches the description in Rule 23 for an ACV?
✅ Before You Answer
• Verify in Rule 23 that the ACV’s special light is all-round and flashing, not just steady.
• Confirm that the color you choose is not reserved for another specific meaning (for example, certain red or blue lights).
• Make sure the light you select is in addition to the standard masthead, sidelights, and sternlight of a power-driven vessel.