 As the Nationalist Revolution progressed in the Middle Yangtze Valley, "Palos" stood down river and operated about Hankow and Kiukiang through 1927.She was reclassified PR-1 on 15 June 1928, and continued her river patrol operations until being placed in reserve in June 1929 when six new river gunboats joined the Yangtze Patrol.Basing out of Shanghai, "Palos" cruised the lower Yangtze and its tributaries, making less frequent patrols to the upper river except when unrest required additional naval presence.