 Commander John G. Palmer USN, relieved commander Donald R. Schaffer, USN, in Yokosuka, Japan, on 18 July 1966.The Sea of Japan transit began 20 July as "Larson" left Yokosuka; during the transit exercises were conducted with the Japan Maritime Self-Defense Force until 28 July; then with Republic of Korea Navy until 1 August.On 2 August, "Larson" pulled into Sasebo, Japan, and left 8 August with ASWGRU FIVE for duty on "Yankee Station".