Per the "Cruise Summary for 1969-1970", in September 1969, "Collett" left for a six-month deployment with the Seventh Fleet and served at Yankee Station on 27 October to 14 November. A second tour at Yankee Station from 21 December 1969 to 20 January 1970 was followed by a third tour in February when "Collett"'s motor whaleboat was used to rescue 7 survivors of a Navy helicopter. Later in February, "Collett" provided 4 days of shore bombardment in support of Operation Dung Son 3/70. On 27 February 1970, "Collett" arrived in Subic Bay for the journey home.