HMCS St. Julien
 HMCS St Julien was one of twelve Battle class naval trawlers used by the Royal Canadian Navy (RCN). Named after the Battle of St. Julien she was built by Polson Iron Works in Toronto Ontario and was commissioned on 13 November 1917. Decommissioned in 1920 she was turned over to the Department of Marine and Fisheries and like sister ships HMCS Messines HMCS St. Eloi and HMCS Vimy was converted to a lightship eventually being designated Lightship No. 22.