Barges are flat-bottomed boats designed for transporting goods on rivers and canals. They are typically pushed or pulled by tugboats and can carry large amounts of cargo, making them an efficient choice for shipping. Barges are often used to move materials like coal, grain, and construction supplies. These vessels are usually made of steel or aluminum and can vary in size. Some barges are equipped with a deck for loading and unloading, while others are designed to be covered to protect cargo from the elements. Barges play a crucial role in the shipping industry and contribute to inland waterway transportation.