Sault Ste. Marie, Ontario the locks. An anti-aircraft training facility was established north of Sault Ste. Marie on the shores of Lake Superior. Barrage balloons were installed, and early warning radar bases were established at five locations in northern Ontario (Kapuskasing, Cochrane, Hearst, Armstrong (Thunder Bay District), and Nakina) to watch for incoming aircraft. Military personnel were established to guard sensitive parts of the transportation infrastructure. A little over one year later, in January 1943, most of these facilities and defences were deemed excessive and removed, save a reduced military base at Sault Ste. Marie. The first "Algerine"-class minesweeper in the Royal Canadian Navy
HMCS Sault Ste. Marie (J334) a training ship. She was assigned to until the end of 1954. In mid-December 1955, she returned to the East Coast, joining the Eleventh Canadian Escort Squadron at Halifax. The minesweeper was used as a training vessel during the summers from 1956 to 1958 on the Great Lakes. On 1 October 1958 "Sault Ste. Marie" was paid off. She was taken to Sorel where the ship was broken up in 1960. The 4-inch gun of "Sault Ste. Marie" can be found outside the Royal Canadian Legion in Sault Ste. Marie. HMCS Sault Ste. Marie (J334) HMCS "Sault Ste. Marie" was