USS Ailanthus (AN-38/YN-57) was an Ailanthus-classnet laying ship which served with the U.S. Navy in the western Pacific Ocean theatre of operations during World War II. She was assigned to the U.S. Pacific Fleet with her protective anti-submarine nets. She ran aground at Lash bay, Tanaga Island in the Aleutians 26 February 1944 and was declared a total loss. She was only six months old. Seabees of Naval Construction Battalion 45 assisted the ship's crew evacuate safely.
The net tender completed fitting out and, during the second half of December, conducted shakedown training. On the last day of 1943, she reported for duty in the 13th Naval District. On 20 January 1944, she was reclassified a net laying ship and redesignated AN-38.
However, her career proved very brief. Having delivered a cargo of perforated steel plating (Marston Mat) to a Navy Seabee contingent building an airfield on the westernmost island of Attu, Ailanthus was caught in a violent winter storm, and on 26 February 1944, slipped her anchorage and was driven hard aground, suffering extensive damage. While still stranded, Ailanthus was reassigned to the newly constituted 17th Naval District (the Alaskan portion of the old 13th Naval District to which she had originally been assigned). Finally, she was declared a total loss, and her name was struck from the Navy List on 9 June 1944.