Ocean Network Express (ONE) announced the launch of its "ONE Eco Calculator," which calculates carbon dioxide (CO2) emissions from the carrier's operating vessels.

In a statement, ONE said the tool is one of the company's milestones in its journey to achieving net zero.

With the ONE Eco Calculator, ONE said vessels are expressed as either Tank-to-Wake (TTW) — a measure of emissions from burning fuel, which has been stored in a tank, or Well-to-Wake (WTW) — a measure of emissions from fuel production, delivery, and use aboard ships.

"As we strive towards decarbonization, ONE is on a continuous journey to encourage stakeholders to participate," said Koshiro Wake, senior vice president of the corporate strategy & sustainability department, Ocean Network Express (ONE).

"Thus, the ONE Eco Calculator was developed not only for ourselves but also for like-minded players and customers seeking sustainable transport solutions and seeking to manage their own cargo emissions."

Wake added that the commitment to achieving net zero is at the top of ONE's management agenda, along with the company's Green Strategy which was unveiled in March 2022.

ONE said its "ONE Eco Calculator" provides total distance and total CO2 emissions from Place of Receipt to Place of Delivery, including door locations.

It added that by offering this service, customers can choose a more environmentally friendly service for their shipments.