Navigational lights also help determine the boat's what?

• A. Type
• B. Speed
• C. Length
• D. Propulsion

Answer: (A)

Navigational lights are arranged according to vessel category, so other mariners can identify what kind of boat you’re looking at and which rules to apply. The lights signal whether a vessel is power-driven, sailing, fishing, or otherwise, and whether it’s underway or at anchor. That makes the lights a cue for the vessel’s type, not its speed, length, or propulsion. Speed and size aren’t directly shown by the lighting pattern, and propulsion isn’t something the standard lights uniquely reveal.