طنب الكبرى
On 29 March 1968, "Tartar" and the amphibious assault vessel were deployed to patrol off the Greater and Lesser Tunbs, small islands in the Persian Gulf, to deter Iran from occupying the islands. Between 1969 and 1971 she was commanded by Captain Cameron Rusby. On the voyage to the Seychelles the fleet auxiliary vessel was lost, having struck a submerged object. Service in the Gulf was followed by a homeward journey via the Beira Patrol lasting six weeks and Cape Town thence to Gibraltar arriving during the talks between Harold Wilson, Prime Minister and Ian Smith from Rhodesia on board the cruiser .