Late in December, Achomawi arrived back at Charleston but soon sailed for Wilmington, North Carolina to pick up ARDC-J for towing to the west coast.

The tug transited the Panama Canal late in January 1945 and continued on to San Pedro, California where she arrived on 17 February.

On that day, she got underway from San Francisco bound for Pearl Harbor, Hawaii with two pontoon barges in tow.

At that atoll, she assumed duty with Service Division 102 and operated there through the end of World War II in mid-August.

Achomawi departed California in early April to return to the western Pacific to support Operation "Crossroads," which involved atomic testing at Bikini Atoll.

Following the Able test on 1 July, the tug attempted to take the heavily damaged Japanese light cruiser Sakawa in tow, in an effort to beach the vessel.

Throughout the remainder of the operation the tug carried out various towing assignments between Pearl Harbor, Bikini, Eniwetok, and Kwajalein, and was released in August.

Achomawi left Hawaii on 14 September, and arrived in San Francisco Bay on 2 October, where it underwent radiological decontamination.

In 1991, the ship was sold to the government of Taiwan, where she entered service with the Republic of China Navy as ROCS Da Gang (ATF-554).