A cargo vessel is a type of ship used to transport goods from one place to another. The most common types of cargo vessels are freighters, which have nine letters, scows, which have four letters, and oilers, which have five letters. Freighters are large ships that can carry a variety of goods, including containers, bulk cargo, and vehicles. Scows are flat-bottomed boats that are used to transport goods over shallow waters. Oilers are ships that transport oil and other petroleum products.