What object is required to be on board of a 15 foot boat?

A 15-foot boat is required to have certain safety equipment on board, including a properly fitting life jacket for each person, a sound signaling device (like a whistle or horn), and a fire extinguisher if the boat has a motor. Additionally, it’s important to have navigation lights if operating after dark. Depending on local regulations, other items such as a first aid kit and a throwable flotation device may also be required. Always check specific state or local boating laws for comprehensive requirements.