 The Caledonian Steam Packet Company (CSP) was formed as a packet company in May 1889, with Captain James Williamson as secretary and manager.Nominally an independent company, they bought the ships needed to operate steamer services to and from Gourock.On withdrawal of the Wemyss Bay Steamboat Company in 1890, CSP took over services to Rothesay, Largs and Millport.