Navigation marks, lights and sounds

Understand navigation marks and how to pass them safely. Know your sound signals and what lights you must display on your vessel. Recognise other vessels at night.

Navigation marks help you safely navigate a waterway. Use these marks in combination with your maps and charts to navigate safely.
All vessels need lights to be seen at night and when visibility is limited. Here are the lights you must display and what they mean.
Recognising these lights on other vessels will help you stay safe on the water at night or in restricted visibility.
When you're out on your vessel, you can use sound signals to help prevent collisions. Here's how and when to use them.

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