London/Tokyo, December 6, 2018 - Inmarsat (LON: ISAT), the world leader in global mobile satellite communications, has today announced that it has entered into an agreement with Mitsubishi Heavy Industries, Ltd. (MHI) to be the first commercial customer to place an order for the new H3 launch vehicle. The maiden flight of H3 is scheduled for 2020 with Inmarsat planning to deploy the new launch vehicle after 2022.