summer training centre located on the grounds of the Royal Military College. The Centre takes its name from HMCS ONTARIO a Minotaur class light cruiser built for the Royal Navy as HMS Minotaur (53), but transferred to the Royal Canadian Navy on completion and renamed Ontario. CTC HMCS Acadia, located in Cornwallis, Nova Scotia, is the largest summer training facility. During the course of the summer, Acadia is home to roughly 1200 cadets who are undergoing training. Acadia provides training in Music, Sail, Drill and Ceremonial, and Seamanship training. It is known for a strong Royal Canadian Air Cadet presence amongst both course and staff cadets. HMCS Acadia, much like HMCS Quadra, hosts an international contingent. In 2006, HMCS Acadia celebrated 50 years as a Sea Cadet Summer Training Centre. HMCS Acadia's website Additionally, cadets may apply for a number of tri-service courses, some hosted by Sea Cadet Summer Training Centres and others held on Army or Air Cadet facilities. Currently various forms of music training are offered as tri-service to some extent. In past years the Air-heavy Introduction to Aerospace course was offered as tri-service; however, this seems to have lapsed. Former SCSTC HMCS Haida, the historic Destroyer that fought in WW2 and now a National Historic site, was home to a unique six week long Boatswain trade training course during the summer in the 1970's. At that time HMCS Haida was museum ship located in Toronto, Ontario. Approximately 30 Sea Cadets would live aboard, sleep in hammocks like the original crew, and follow a realistic ship's routine for six weeks while training. They would also double as museum guides for periods during the day. On at least one occasion, select cadets were offered the opportunity to use their new skills after graduating from the course. In 1975 four cadets were selected to serve a three week stint aboard Canadian Coast Guard vessels at sea, sailing from Halifax, Nova Scotia. SCSTC HMCS Avalon, located in St. John's, Newfoundland, was, at its closing, the smallest SCSTC in Canada. It offered training in either basic sail or beginner band. SCSTC HMCS Qu'Appelle was located at the Echo Valley Conference Centre, formerly the Fort San sanatorium, near Fort Qu'Appelle, Saskatchewan, an hour north east of Regina, Saskatchewan. HMCS Qu'Appelle offered the introductory Two-Week General Training course, and Trade Groups One through Three of the Music and Sail courses. HMCS Qu'Appelle last offered