disguised as a fishing vessel. Mullany "shadowed" the Ivan for several days, collecting vital intelligence before turning over the shadowing duty to a fleet tug. The following year she returned to the coast of Vietnam to seek out and destroy craft moving enemy supplies. From 20 to 30 November 1966, she destroyed 28 enemy watercraft and damaged 26 others with her 5 inch guns. She screened until sailing for San Diego in March 1967. Following an overhaul at Long Beach, Mullany spent the remainder of the year conducting refresher training and local operations off the coast of California. In February 1968, she once again deployed to the Western Pacific. On 24 April 1968 the positions of the 1st Battalion, 26th Marines at Wunder Beach were hit by 11-15 rounds of fire from the ship killing two Marines. On 9 July 1968, Mullany left Vietnamese waters for the last time. During 137 days at sea, she had steamed 46,468 miles, nearly twice around the earth. Over a career that spanned 25 years, she would have circumnavigated the globe more than 40 times. After a visit to Auckland, New Zealand, she returned to San Diego in September. Based in Long Beach, Mullany spent the next two years steaming up and down the West Coast as a reserve training ship. By 1971, Mullany was the oldest destroyer on active service. She was decommissioned and stricken from the Naval Vessel Register 6 October 1971, and sold to the Republic of China for $150,000, plus $3,000, "administrative charges." Service in the Republic of China On 9 December 1969, the ship underwent an overhaul and Wujin No. 1 special shipyard at the No. 1 Naval Shipyard. the original Mark 37 fire control and command system was replaced with Wuyi fire control and command system. In 1971, the completion in May greatly increased the combat power of the ship. Transferred to the Republic of China Navy 6 October 1971, the ship was renamed Chin-yang（慶陽）. In December 1974, the ship began the installation of the Hsiung Feng II missile at the Navy's No. 1 Shipyard. The Installation was completed in May 1975. On April 2, 1975, at 10:10 a.m. DDG-909 successfully launched the first Surface-to-Air missile in ROC Navy history, and that marks the missile era for the ROC Navy. DDG-909 Chin-Yang was in service of ROC Navy for 26 years and through 20 Commanding Officers. The mission