Which statement is true concerning visual distress signals?

The statement regarding flares being rated for day, night, or combined day/night use is accurate. Flares are designed to be effective visual distress signals that can be used in different conditions and times of day. Daytime flares typically produce a bright smoke signal that can be visible in daylight, while nighttime flares create a bright light that stands out in the dark. Some flares are designed for use at any time, making them versatile and compliant with safety regulations. This dual functionality is crucial for boaters in emergency situations, ensuring they have a means of signaling for help regardless of the time of day.

The other statements do not accurately reflect the regulations or functionalities of flares. For instance, while the concept of below-deck storage may apply to some safety equipment, it is not a requirement for flares. Legal status related to flares is also maintained as long as they meet current standards and have not expired, meaning they still hold their significance in emergency preparedness.