New York-listed Navigator Holdings has bolstered its orderbook for liquefied ethylene gas carriers with two additional 48，500 cum newbuilds.

The world’s top player in the handysize LPG carrier segment has exercised an option at Jiangnan Shipyard in China at about $102.9m per ship， for delivery in November 2027 and January 2028.

The vessels will be of the same specification as the two newbuilds announced in August and able to carry a variety of gas products， such as ethylene and ethane， as well as LPG and clean ammonia. The units will feature ethane dual-fuel engines， be ammonia fuel-ready， and be fit to cross the former and the new Panama Canal locks.

Navigator currently boasts a fleet of 56 semi- or fully-refrigerated liquefied gas carriers and owns a 50% stake in an ethylene export marine terminal at Morgan’s Point in Texas.