In 1939 American Petroleum Transport Corporation operated eight tanker ships from the Gulf of Mexico to Hatteras, North Carolina.

American Petroleum Transport Corporation was active in supporting the World War II efforts.

Some tanker ships American Petroleum Transport Corporation operated were sunk by German U-boat submarines.

[1] American Petroleum Transport Corporation ships were used to help the World War II effort.

American Petroleum Transport Corporation operated Liberty ships and T2 tankers for the merchant navy.