When can you use hand held flares on a boat?

Handheld flares can be used on a boat during emergencies to signal for help when you're in distress or lost at sea. They are typically deployed when visibility is poor or when you need to attract the attention of nearby vessels or aircraft. It's important to use them in accordance with local regulations and safety guidelines, ensuring they are only used in situations where immediate assistance is required. Always follow the manufacturer's instructions for safe handling and deployment.