Berkeley then spent the next eight weeks conducting sea trials, together with a voyage to Victoria, British Columbia, and natural pain relief exercises a joint exercise with the Canadian Navy. Those preparations continued into the new 12 months, occupying her time for the primary 11 weeks of 1971. Berkeley set sail on sixteen 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 natural pain relief exercises upkeep. Returning to Subic Bay on 7 August, the warship spent the subsequent 10 weeks working locally with Constellation. There, she joined Kitty Hawk and put to sea for seven weeks of operations within the East China Sea. Following a short upkeep period, she steamed to "Yankee Station" on 10 April and began escort responsibility for Kitty Hawk. On 10 November, the Kitty Hawk group steamed south for operations in the South China Sea. After calling at Keelung, Taiwan, in late October and at Hong Kong in early November, Berkeley sailed back to Vietnam on 11 November. Between 25 May and 15 June, Berkeley visited Hong Kong and Kobe for natural pain relief exercises relaxation and MovesMethod product page 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 natural pain relief exercises earlier than placing into Geraldton, Australia, for every week-long port visit in mid-July.

The overhaul gave the guided missile destroyer the brand new tactical information system, a sonar upgrade, new communications and electronic warfare gear, and two new 5-inch gun mounts. While en route to Subic Bay in early April, she performed both antisubmarine and antiair warfare exercises, an underway daily mobility routine that became the sample for this deployment. During this time, Berkeley additionally made port visits to Hong Kong and Subic Bay. In May, MovesMethod testimonials after a brief period of PIRAZ duty 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 conducted a ultimate five-week gunfire assist tour off North Vietnam. Following four days there, and just over a week in Singapore for upkeep, Berkeley returned to the Vietnam war zone on 7 August. Over the next two months, Berkeley conducted three gunline patrols-firing nightly interdiction missions, searching for waterborne logistics craft, and bombarding provide routes-off both North Vietnam and the Vung Tau Peninsula.

Underway once more on 3 August, Berkeley carried out another missile exercise-knocking down one drone with two missiles fired-before crusing for residence on eight August. In February, she had one of many early Tomahawk missiles test-fired at her (set to fly close by) to see if the incoming Tomahawk could be acquired