After routine upkeep and replenishment at Subic Bay in late June and early July, the guided-missile destroyer commenced her second "Sea Dragon" patrol on 12 July. Detached 10 days later, she sailed north to the Tonkin Gulf SAR station where she monitored daily strikes over North Vietnam. During three weeks on station, "Berkeley" participated in seven SAR incidents and helped to rescue four pilots. Relieved on 11 August by , the warship sailed to Hong Kong for a week of rest and recreation.