Built in 1903, by the Neafie & Levy Ship and Engine Building Company of Philadelphia, Pennsylvania (hull #962) as the S.O. Co. No. 15 for the Standard Oil Company of New York, New York.

In 1915, the marine department of the company was reorganized as the Standard Transportation Company of New York, New York, where the tug was renamed as the S.T. Co. No. 15.

In 1918, the marine department of the Standard Transportation Company was reorganized as the Socony Mobil Oil Company Incorporated of New York, New York, where the tug was renamed as the Socony 15.

In 1932, the tug was transferred to the ownership of the Socony Vacuum Oil Company of New York, New York, where she retained her name.

In 1932, she was acquired by the Avondale Towing Line of New York, New York., where the tug was renamed as the Maurice Tracy.

In 1938 she was acquired by the Wood Towing Corps. of Norfolk, Virginia, where she was renamed Pocahontas.

In 1951 she was acquired by Donaldson Towing & Lightering Company of Wilmington, Delaware, where she retained her name.

In 1956 she was acquired by the Curtis Bay Towing Company of Wilmington, Delaware where she retained her name.

In 1958 the Curtis Bay Towing Company’s assets were acquired by the Moran Towing Corporation of New Canaan, Connecticut, though the company continued to operate under the Curtis Bay name until 1988.

In 1959, the tug was acquired by the Thomas Transportation Company of New York, New York, where the tug retained her name.

In 1962 she was acquired by the Stone Towing Corporation of Wilmington, North Carolina, where she retained her name.

In 1985 she was reefed off of Wilmington, North Carolina.

A single screw tug, she was originally powered by a compound steam engine rated at 500 horsepower; in 1958 she was re-powered with a diesel engine rated at 900 horsepower.