If your vessel is 16 feet long or longer In addition to one life jacket for each person on board what other equipment must be on board?

If your vessel is 16 feet long or longer, in addition to one life jacket for each person on board, it must have a sound-producing device, such as a whistle or horn, and a fire extinguisher if the vessel has an enclosed space. Additionally, it should carry visual distress signals and, depending on the type of vessel, a throwable flotation device may be required. Always check local regulations, as specific requirements can vary by state.