Singapore's X-Press Feeders Group has ordered 16 methanol-powered container ships.
It announced that contracts have been signed for the 1,170-teu "state of the art" vessels at two Chinese yards.
They will be outfitted with ultramodern dual-fuel engines that can operate on regular fuel or green methanol and are "specifically designed to be highly fuel-efficient", the company said.
No price has been revealed.
The ships will be delivered between the final quarter of 2023 and the end of 2024.