This changes the silhouette of the corvette and made it more difficult for submariners to tell which way the corvette was laying. "Guelph" was laid down by Collingwood Shipyards Ltd. at Collingwood, Ontario 29 May 1943 and was launched 20 December 1943. She was commissioned into the Royal Canadian Navy 9 May 1944 at Toronto, Ontario. Due to her late arrival into the war "Guelph" never had a refit. After arriving at Halifax in June 1944, "Guelph" was assigned to a special escort mission in July. She escorted Royal Navy submarines "P.553" and "P.554" to Philadelphia where they were being returned to the United States Navy. On 2 August she joined the Western Local Escort Force where she was assigned to escort group W-3. "Guelph" continued in that capacity until September 1944 when she transferred to the Mid-Ocean Escort Force (MOEF) as a trans-Atlantic convoy escort. She was assigned to MOEF escort group C-8 until April 1945 when she returned to Canada. She journeyed to Halifax where she became a local escort, performing this duty until the end of the war. "Guelph" was paid off 27 June 1945 at Sorel, Quebec and transferred to the War Assets Corporation. She was sold 2 October 1945 for mercantile use to an American buyer who kept the name "Guelph" after conversion to a cargo ship but registered her under a Panamanian flag. In 1954, the ship was renamed "Josephine Lanasa". In 1956 she was sold and renamed "Burfin" and was last noted on Lloyd's Register in 1964-65.