Ships built in Thunder Bay

HMCS Winnipeg was an Algerine-class minesweeper that served in the Royal Canadian Navy during the Second World War. Used primarily as a convoy escort, the vessel served in the Battle of the Atlantic. Following the war she placed in reserve before being sold to Belgium and renamed A.F. Dufour. She served with the Belgian Navy until 1966.

HMS Ossory was a reciprocating engine-powered Algerine-class minesweeper built for the Royal Navy during the Second World War. She commissioned too late for service in the conflict, but was in service during the Cold War period. She was scrapped in 1959.

HMCS Quinte (hull number MCB 149) was a Bay-class minesweeper that served in the Royal Canadian Navy during the Cold War. Entering service in 1954, the minesweeper was the second ship to bear the name. The ship was taken out of service in 1964 and declared surplus in 1965.

HMCS Mulgrave (pennant J313) was a Bangor-class minesweeper that served with the Royal Canadian Navy during the Second World War. Entering service in 1942, the minesweeper took part in the Battle of the Atlantic and the invasion of Normandy. While sweeping for naval mines off France in 1944, the vessel hit one. The ship was towed back to port where Mulgrave was declared a constructive total loss. Laid up until the end of the war, the minesweeper was broken up in 1947.

HMSAS Bloemfontein was an Algerine-class minesweeper built for the Royal Navy in Canada during World War II. The ship was originally HMS Rosamund (pennant number: J439) and spent several years clearing minefields in European waters after she was completed in 1945 before she was placed in reserve. Rosamund was purchased by South Africa in 1947 and renamed HMSAS Bloemfontein in 1948.

HMCS Blairmore (pennant J314) was a Bangor-class minesweeper that served with the Royal Canadian Navy during the Second World War. Entering service in 1942, the ship took part in the Battle of the Atlantic and the invasion of Normandy. Following the war, the ship was laid up until 1958 when the Blairmore was transferred to the Turkish Navy. Renamed Beycoz, the vessel was discarded in 1971.

HMCS Thunder (hull number MCB 161) was a Bay-class minesweeper that served in the Royal Canadian Navy during the Cold War. The ship was named for Thunder Bay. This was the third vessel to carry the name and the second in the class, replacing a previous vessel sold to France. The minesweeper entered service in 1957 and was paid off in 1997.

HMCS Kamsack was a Flower-class corvette that served with the Royal Canadian Navy during the Second World War. She served primarily in the Battle of the Atlantic as an ocean escort. She was named for Kamsack, Saskatchewan.

HMCS Algoma was a Flower-class corvette that served with the Royal Canadian Navy in the Second World War. Named for the Algoma District of Ontario, it served primarily in the Battle of the Atlantic. After the war it was sold to the Venezuelan Navy and renamed Constitución.

HMCS Wallaceburg was an Algerine-class minesweeper that served in the Royal Canadian Navy during the Second World War as a convoy escort during the Battle of the Atlantic. After the war the vessel was used from 1950 to 1959 for cadet training. In 1959 she was sold to the Belgian Navy and served until 1969 as Georges Lecointe, the second ship to be named after Georges Lecointe.