High Quality Content by WIKIPEDIA articles! HMCS Laurentian was a commissioned patrol boat of the Royal Canadian Navy (RCN) that served in the First World War and postwar until 1919. Launched as the King Edward in 1902, she was acquired by Canada Steamship Lines and renamed Laurentian in 1911. Between 1911 and 1913, she was chartered to the Customs Preventive Service. In 1917, Laurentian was sold to the RCN and served as a patrol vessel until early 1919. After being transferred to the Department of Marine and Fisheries, Laurentian was used as a buoy tender and lighthouse supply vessel until 1946, when she was retired, and was scrapped the following year.