How are navigation lights and signaling devices checked during PSC?

• A. By inspecting the equipment on the bridge and verifying certificates and maintenance logs
• B. By asking the crew during a tour
• C. By testing only at sea on demonstration
• D. By reviewing the voyage plan

Answer: (A)

During PSC, the key idea is to verify both the actual readiness of the lights and signaling devices and the proper paperwork that proves ongoing compliance. Inspecting the equipment on the bridge allows the inspector to confirm the navigation lights are present, correctly installed, and operable—checking colors, angles, ranges, control from the bridge, and the availability of spare bulbs or power sources. At the same time, verifying certificates and maintenance logs shows that the equipment has valid approvals and has been tested, serviced, and repaired at the required intervals, with dates, results, and responsible personnel recorded. This combination ensures that the lights and signaling devices will function when needed and that their maintenance history meets regulatory standards. Merely asking crew, testing only at sea, or reviewing a voyage plan does not provide the necessary evidence of both functional condition and documented compliance.