At the beginning of September, the ship departed Vietnamese waters to undergo repairs at Sasebo, Japan. When she returned to Vietnam at the end of October 1969, "Askari" resumed repair duties, this time at Châu Đốc, south of her previous base of operations. She remained there until 9 November, when the base ships relocated to Long Xuyên, their station for the remainder of 1969 and most of the first quarter of 1970. Late in March 1970, she and the other support ships moved to Đồng Tâm Base Camp and provided repair services at that point until early May. On 9 May she returned to the upper reaches of the Mekong near the Cambodian border to resume support for efforts to stop the flow of Viet Cong supplies. Early in June, the ship arrived back at Đồng Tâm to serve as the primary support ship for RivRon 13 and RivRon 15 until those squadrons turned over their responsibilities to Army of the Republic of Vietnam forces later that month. Between 25 June and 31 August, she operated successively in the upper Mekong, at Bình Thủy on the lower Mekong, and then back at Đồng Tâm again. Except for a round-trip mission to deliver boat engines to Song Bo De between 31 August and 8 September, "Askari" performed her support functions at Đồng Tâm until the middle of December. Thereafter, the ship continued to serve at various locations in the Mekong delta for nine more months. In mid-August 1971, she proceeded from Vietnam to the Marianas on her last voyage for the United States Navy.