Emden is the first 7,000-vehicle dual-fuel PCTC GSI and CSTC built for Norway's SFL company. The other three will also be delivered for use before the end of 2024, a GSI executive said.

With contracts to build 25 PCTCs in hand, GSI has now become the shipbuilder with the second largest construction orders for PCTCs in the world, he said.

Located in Longxue Island at the mouth of the Pearl River, GSI, a subsidiary of China State Shipbuilding Corp is a Shanghai Stock Exchange-list company. It is also one of the major shipbuilding bases in the country.