In World War II, she was again acquired by the U.S. Navy from Standard Oil and commissioned as USS Signal (IX-142) a station tanker in the Pacific from 1944 to 1946.

1532 and commissioned as USS Standard Arrow the same day at Mare Island Navy Yard in Vallejo, California.

Standard Arrow was on a voyage from Devonport, England, to New York City when the Naval Overseas Transportation Service was established on 9 January 1918 and she was assigned to it.

However, she collided with the tanker SS Norman Bridge that day, damaged her steering gear, and sprang a leak in her forward hold.

The U.S. Navy again acquired Standard Arrow on 4 April 1944 for World War II service and commissioned her as the miscellaneous auxiliary USS Signal (IX-142) the same day.