These latest ships are expected to be delivered in late 2017 and early 2018 with the majority of payments also due on delivery, it said.
Last month Fortescue invested $275m on four VLOC newbuildings in China at a yard later to emerge as Yangzijiang Shipbuilding.
Australia's third-biggest iron ore producer said it was in talks with an another Chinese shipyard to build the latest bulkers.
Fortescue
