 In 1943, as part of the Royal Navy's intent to reduce its production of escorts, an agreement was reached between the United Kingdom and Canada that would see the Royal Canadian Navy take over seven River-class frigates building in the United Kingdom.The ship was commissioned into the Royal Canadian Navy on 28 February 1944 at Middlesbrough.After working up, "Teme" was assigned to the convoy escort group EG 6, based out of Derry.