How many pyrotechnic visual distress signals must be on board a boat?

According to U.S. Coast Guard regulations, recreational boats must carry at least three visual distress signals if they are operating on coastal waters or the Great Lakes. For boats operating on lakes or rivers, the requirement may vary, but it’s generally advisable to have at least one day signal and one night signal. It's important to check local regulations as requirements can differ by state. Always ensure that the signals are in good working condition and easily accessible.