A commercial vessel is defined by the United States Coast Guard as any vessel (i. e. boat or ship) engaged in commercial trade or that carries passengers for hire. Trade is the willing exchange of goods, services, or both Trade is also called Commerce. This would exclude pleasure craft that do not carry passengers for hire or warships. A warship is a Ship that is built and primarily intended for Combat.
Commercial vessels come in a myriad of sizes and shapes from twenty-foot inflatable dive boats in Hawaii, to 5,000 passenger casino vessels on the Mississippi River, to 1,000 foot oil tankers and container ships at major ports, to a passenger carrying submarine in the U.S. Virgin Islands [1]. A dive boat is a Boat that Scuba divers use to reach a diving site which they could not reach by swimming from land A riverboat casino is a type of Casino found in several areas of the United States which use a Riverboat as a casino Container ships are Cargo ships that carry all of their load in truck-size containers in a technique called Containerization. A submarine is a Watercraft that can operate independently below water as distinct from a Submersible that has only limited underwater capability The United States Virgin Islands is a group of Islands in the Caribbean that are an Insular area of the United States.
Some examples of commercial vessels: