 On 20 October 1971, "Rowan" again steamed westward out of San Diego, bound for Yokosuka, Japan, and, ultimately, the coast of Vietnam.This time she departed on an extended deployment, remaining in the western Pacific through 1973.The Rowan along with approximately 50 other U.S. Navy ships participated in "Operation Frequent Wind" on 29 and 30 April 1975.