As the Battle of Atlantic moved into its second year, the Royal Canadian Navy began the practice of naming newly commissioned ships after Canadian cities. His Majesty’s Canadian Ship FREDERICTON was a “Flower” class corvette, named for the provincial capital of New Brunswick.

With a length overall of 208 feet, a beam of 33 feet and drawing 13 feet of water, FREDERICTON was originally designed as a coastal vessel and not a "blue water ship." Driven by the increased successes of the Nazi U-boat campaign, however, FREDERICTON and other corvettes like her were forced into the ocean escort role, serving in that capacity throughout the Second World War.

FREDERICTON was armed with one 4-inch gun forward as well as one 12-pounder pom-pom and two 0.5 inch machine guns for air defence. For anti-submarine warfare depth charges were launched from four throwers or rolled over the stern through two traps. She was driven by one triple expansion reciprocation engine of 2750 horsepower, giving her a top speed of sixteen knots.

HMCS FREDERICTION was built by Marine Industries Ltd. at Sorel, Quebec and was launched on 2 September 1941. After three months of trials and outfitting she was commissioned 8 December and arrived in Halifax on 18 December. Following another month alongside in Halifax FREDERICTON commenced her first assignment on 17 January 1942 and by September was employed as a tanker convoy escort on the Aruba run. After completing one round trip to Aruba she was placed under U.S. operational control to escort New York-Guantanamo convoys.

FREDERICTON safely escorted convoys to the Caribbean until 21 February 1943, when she was again transferred to the Western Local Escort Forces (WLEF) and took up duties as convoy escort from New York to St. John’s, Newfoundland. After a major refit at Liverpool, Nova Scotia, from 9 June to 10 October 1943 she completed workups at Pictou and then joined the Mid-Ocean Escort Force sailing from St. John’s to Londonderry, Northern Ireland. FREDERICTON sailed from Londonderry for the final time 30 September 1944 and upon arriving in Canada proceeded to Saint John, New Brunswick, for a two-month refit. Upon completion of her refit FREDERICTON sailed to Bermuda for a three-week workups, after which she spent the balance of the war as an ocean escort. During countless Atlantic crossings in the course of her wartime career, HMCS FREDERICTON was never fired upon. Thus she was dubbed “the luckiest ship in the Royal Canadian Navy” by those who served in her. FREDERICTON was paid off on 14 July 1945 at Sorel and broken up in 1946.