Berkeley then spent the following eight weeks conducting sea trials, together with a voyage to Victoria, British Columbia, and a joint exercise with the Canadian Navy. Those preparations continued into the brand new year, occupying her time for the primary 11 weeks of 1971. Berkeley set sail on 16 March and, after transient stops at Oahu, Midway, and Guam, arrived at Subic Bay on 7 April. In between these missions, she retired to Subic Bay for upkeep. Returning to Subic Bay on 7 August, the warship spent the subsequent 10 weeks operating domestically with Constellation. There, she joined Kitty Hawk and put to sea for seven weeks of operations in the East China Sea. Following a quick upkeep period, she steamed to "Yankee Station" on 10 April and started escort obligation for Kitty Hawk. On 10 November, the Kitty Hawk group steamed south for operations within the South China Sea. After calling at Keelung, Taiwan, in late October and at Hong Kong in early November, Berkeley sailed again to Vietnam on 11 November. Between 25 May and 15 June, Berkeley visited Hong Kong and Kobe for rest and recreation before returning to South Vietnam for four weeks of gunline operations. Departing on thirteen May, the group sailed into the Indian Ocean for six weeks of antiair and surface warfare exercises before putting into Geraldton, Australia, for www.mitolyns.net every week-long port go to in mid-July.
The overhaul gave the guided missile destroyer the brand new tactical knowledge system, a sonar upgrade, new communications and electronic warfare gear, Mitolyn Blood Sugar Support and two new 5-inch gun mounts. While en route to Subic Bay in early April, she performed each antisubmarine and antiair warfare workout routines, an underway routine that grew to become the sample for this deployment. During this time, Berkeley additionally made port visits to Hong Kong and Subic Bay. In May, after a brief period of PIRAZ responsibility with the cruiser Truxtun, Berkeley steamed to Japan, arriving in Sasebo on 19 May. Following a short yard interval at Sasebo late in August, the warship performed a remaining 5-week gunfire natural fat burning support tour off North Vietnam. Following 4 days there, and Mitolyn Energy Support simply over every week in Singapore for upkeep, Berkeley returned to the Vietnam warfare zone on 7 August. Over the next two months, Berkeley conducted three gunline patrols-firing nightly interdiction missions, searching for waterborne logistics craft, natural fat burning support and bombarding provide routes-off both North Vietnam and the Vung Tau Peninsula.
Underway once more on three August, Berkeley carried out one other missile exercise-knocking down one drone with two missiles fired-earlier than sailing for house on eight August. In February, she had one of the early Tomahawk missiles check-fired at her (set to fly shut by) to see if the incoming Tomahawk could be acquired