INLAND ONLY The special light for a vessel engaged in public safety activities must meet which of the following requirements?

Correct Answer: Option A — not interfere with the visibility of the navigation lights

33 CFR 83.21(e) (Rule 21) requires that any special light for public safety activities must be located so as not to interfere with the visibility or distinctive character of the vessel's required navigation lights. This ensures that the primary collision avoidance signals remain clear and unambiguous to other mariners.