Commissioned on July 31, 1944, at Leith, Scotland, she worked up at Tobermory and joined EG 6 in September at Londonderry. Loch Achanalt served with the group until VE-Day on A/S patrol and support duty in U.K. waters, based for brief periods at Portsmouth and Plymouth. When the group was transferred to Halifax in April, 1945, she accompanied it, but left Halifax on May 29 for Sheerness and there was paid off on June 20 and returned to the RN. She remained in reserve at Sheerness until 1948, when she was sold to the Royal New Zealand navy and renamed Pukaki. She was broken up at Hong Kong in 1966.