which the tanker was able to achieve top speed of , about 3/4 of a knot over her contractual speed. After successful completion of the sea trials, Oklahoma was turned over to her owners approximately a week later and officially commissioned on April 25. Operational history After delivery to her owners the tanker loaded a full cargo of petroleum consigned to the Anglo-American Oil Company and departed Philadelphia for United Kingdom on 7 May 1908. After reaching and unloading her cargo at Belfast on May 21 and Dublin on May 23, the ship sailed back to Philadelphia arriving there on June 8, thus successfully completing her maiden voyage. On her second trip to England in June 1908 the tanker grounded on the upper end of Tinicum Island while travelling down Schuylkill River with a cargo of 2,400,000 gallons of oil, but was able to refloat herself on the rising tide and proceed to her destination. After two more trips from Philadelphia, the tanker was reassigned to a different route and started carrying oil from Port Arthur to United Kingdom for the remainder of 1908. Starting in 1909 Oklahoma was put on a domestic coastal route carrying oil and petroleum products from Gulf ports of Port Arthur and Beaumont to refineries in Philadelphia and New York. She continued serving this route without interruptions for the remainder of her career. On 4 January 1911 while attempting to dock in Port Arthur the tanker rammed and cut in half the barge Saratoga belonging to the Texas Company also causing minor damage to the wharf totaling in excess of 10,000. In October 1910 Oklahoma became a center of a wireless hoax, when multiple vessels and shore stations picked up a wireless call for help pretending to be coming from her. Several ships searched for presumably stricken tanker including revenue cutter but found no trace of the ship. The cutter finally was able to contact Oklahoma next day who was way down south on her way to Port Arthur and reported that everything was normal and they never sent a distress call. Sinking Oklahoma departed for her last voyage from New York in ballast on 3 January 1914 bound for Port Arthur. The tanker was under command of captain Alfred Gunther, had a crew of thirty eight men and also had on board one passenger, captain Loring A. Cates, who was on his way to