When should a muffler on a boat be used?

A muffler on a boat should be used primarily when operating in noise-sensitive areas, such as near residential zones, marinas, or wildlife habitats, to reduce engine noise and minimize disturbances. Additionally, a muffler can help improve engine performance by reducing back pressure and enhancing exhaust flow. It's also advisable to use a muffler during recreational activities, ensuring a more pleasant experience for everyone on board and nearby.