In March of 2000, Morania Oil Tanker Corporation merged into Penn Maritime. Establishing offices in Stamford, Connecticut; Staten Island, New York; and Slidell, Louisiana.
Penn Maritime Incorporated currently owns and operates twenty barges and seventeen tugboats. They are a major coastal transporter of heated asphalt products in the United States.
In 2012, Penn Maritime was acquired by the Kirby Corporation of Channelview, Texas.