She underwent a second refit at Cockatoo Island between 9 October 1964 and 10 December 1965, due to the extensive repairs required to her fin, casings and salt water systems. Following the establishment of the 1st Australian Submarine Squadron in 1967, the 4th Submarine Squadron returned to the UK, however "Tabard" along with "Trump" remained behind on loan to the Royal Australian Navy. "Tabard" returned to the United Kingdom in March 1968. She was permanently moored as a static training submarine at the shore establishment HMS "Dolphin" from 1969 until 1974, when she was replaced by .