What age children must wear a USCG-approved life jacket when underway on a vessel less than 26 feet in length?

Children under the age of 13 must wear a U.S. Coast Guard-approved life jacket while underway on a vessel less than 26 feet in length, unless they are in a fully enclosed cabin. This regulation is designed to enhance safety on the water and reduce the risk of drowning. It is important for boaters to ensure that life jackets are properly fitted and in good condition. Additionally, individual states may have their own specific regulations regarding life jacket use for children, so it's advisable to check local laws.