By law what age children must wear a USCG-approved PFD at all times while underway on a vessel less than 26 feet long?

By law, children under the age of 13 must wear a U.S. Coast Guard-approved personal flotation device (PFD) at all times while underway on a vessel less than 26 feet long. This requirement is designed to enhance safety and reduce the risk of drowning in case of an accident. It is important for boaters to ensure that the PFDs are properly fitted and suitable for the child's weight and size.