The facility surpassed its previous record of 1.07 million TEU in October 2016, according to Container Management magazine.
According to a company statement, the result was influenced by the growing need for direct vessel calls in the Baltic and the visible growth of cargo targeted at Eastern and Central European markets.
During the year, the transshipment hub also celebrated the opening of the second deepwater berth (T2), one of the largest investments in Pomerania (a region on the southern shore of the Baltic Sea).
With T2, which was completed on time and on budget, DCT's handling capacity has increased from 1.5 million TEU to three million TEU.
Said DCT chief executive Cameron Thorpe: "With the opening of Terminal 2, we now have the prospect to take it to the next level ?use this potential and double in size."
DCT has opened the market to direct calls from Asia and provides access for Polish importers and exporters, as well as enhanced transshipment access across the Baltic for shipping lines, said Mr Thorpe.
"Our challenge now is to attract new services and to push further into central Europe, whilst retaining and consolidating our position with our existing customers," he said.