The Glen-class tugs were a class of tugboats of the Royal Canadian Navy built during the Second World War. There were three designs of the tugboat; two were of steel-hulled construction and the other was wooden-hulled. Of the 20 of the class built, 16 were of the steel-hulled type; 11 built by Russel Bros. of Owen Sound, Ontario and 5 by Canadian Dredge & Dock Co., Kingston, Ontario. Of the four wooden-hulled type; three were built by McKenzie Barge and Derrick, Vancouver, British Columbia, and one by LeBlanc Shipbuilding, Weymouth, Nova Scotia. All but one – Glendyne – were sold into commercial service after the war. Designs Steel-hulled The steel-hulled tugs all had the same hull design and dimensions, but were of two types; the Long House (Design A) and the Short House (Design B). The Long House-type had the main deck house extending aft over the engine room, with the bulwarks extending the entire length of the hull. They were powered by an 8-cylinder diesel engine built by the Vivian Engine Works, Vancouver. The Short House-type had a shorter main deck house with a trunk style house over the engine room, with raised bulwarks forward and aft. They were powered by a 6-cylinder diesel engine built by the Enterprise Engine & Foundry Company, San Francisco. Wooden-hulled Three wooden-hulled tugs were built by McKenzie Barge and Derrick of Vancouver, the Glendevon, Glendon and Glenholme. Glenholme was completed in 1945, but was never commissioned into naval service. The Glenwood, built by LeBlanc Shipbuilding, Weymouth, Nova Scotia, was incomplete when the war ended. She was sold to St. John Drydock & Shipbuilding Co., completed and renamed Ocean Weka. Ships Steel-hulled Long House type M/V Glenada, launched 23 November 1943, sold post-war. Owned by Sandrin Bros., Sarnia, Ontario, until 1995, when acquired by Thunder Bay Tug Services, Thunder Bay, Ontario. Glendower, launched 19 May 1943, commissioned 18 June 1943. Sold in 1946. Renamed E. A. Rockett (1946–1976), then Paul E. No. 1 (1976–2007). Owned by LeBrun Constructors, Ltd., Thunder Bay, Ontario, since 1983. Glenora, launched 18 September 1943. Sold post-war. Renamed Lotbiniere and then Glenshiel. Owned by Glenshiel Towing Co, Ltd., Vancouver to 2004. Glenmont, launched 27 October 1943. Sold to the Province of Newfoundland's Ministry of Public Works in 1947. Sold mid-1980s. In 1997 owned by Shepherd Boats Ltd. Rexdale, Ontario. Sold, rebuilt as a charter ship and renamed Carolina Borealis in