A marine engine is a type of engine specifically designed to power boats and ships. These engines can be powered by various fuels, including diesel and gasoline, and are built to withstand the harsh conditions of marine environments. They are essential for propulsion, helping vessels move through water efficiently. Marine engines come in different configurations, such as inboard and outboard engines. Inboard engines are installed inside the hull of the boat, while outboard engines are mounted on the transom. Both types are crucial for the operation of various watercraft, from small recreational boats to large commercial vessels like cargo ships.