Having been launched after the war, she was selected, along with a number of boats of her class, to try out new streamlining techniques based on the German Type XXIII submarine.

When she returned to the UK, she became the static training submarine at the shore establishment HMS Dolphin, until 1974 when she was sold and broken up.

[4] Further aft, she had an Oerlikon 20 mm cannon mounting which was modified for boats by having holes cut in the pedestal for drainage.

[7] In 1950,[8] Tarbard's pressure hull was cut at the after end of the engine room and the submarine was lengthened by 20 feet (6.1 m).

[12] On 18 December 1950, she rescued Roi Wilson, later captain of the Royal Naval College, Greenwich, after he and his observer James Hawker had downed their Fairey Firefly.

[17] On 8 May, Tabard was involved in a further minor collision with Royal Australian Navy frigate HMAS Queenborough, following a week of anti-submarine training exercises.

[18] Tabard was at periscope depth when Queenborough passed above her, bending the submarine's fin and the frigate's keel and port propeller.

[21] 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.