364. BOTH INTERNATIONAL & INLAND At night a vessel displaying the lights shown in illustration D065RR is doing which of the following?

The displayed lights indicate a vessel at anchor, as required by Navigation Rule 30. This rule mandates that vessels 50 meters or more in length exhibit two vertical white all-round lights when anchored, which matches the illustration. Vessels underway, towing, fishing, or drifting must display different running lights, which are absent in this scenario.