The Ericsson Line of steamboats originated as steamers built for freight only; however, the line converted to passenger boats during 1876 at the time of the Centennial Exposition in Philadelphia as the demand for travel increased. The Baltimore and Philadelphia Steamship Companies, which operated the Ericsson line, built and furnished ships with seventy to eighty staterooms in addition to the freight facilities. In turn, these ships grew from less than one hundred to more than six hundred tons and greatly increased travel from Baltimore to Philadelphia. The Ericsson Line was named after its first ship, Ericsson, which was named after John Ericsson who developed the screw propeller that was installed on the vessel specifically designed for the Chesapeake & Delaware Canal. Ericsson was built at Reanie & Neafie's shipyard in Philadelphia by Anthony Groves, Jr. The ship, finished in 1843, was in length and weighed eighty tons. It began operations in 1844 under the direction of Captain Noah F. Ireland. The Ericsson Line operated out of Baltimore's No. 1 Light Street Pier for 75 years, serving passenger and freight demands throughout the waterway with thirty registered steamers. The Ericsson Line's success brought utility and prosperity to the canal and promoted an expansion of trade by means of its growth and connection to the Atlantic Deeper Waterways Association of the Chesapeake & Delaware Canal.