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Iron Ore

Fourth transhipper sets sail at Onslow Iron

The production ramp-up of Onslow Iron has been bolstered by the successful commissioning of Mineral Resources’ (MinRes) fourth transhipper, MinRes Rosily.

Published on 25 March 2025

Transhipper MinRes Rosily
Transhipper MinRes Rosily

Having arrived in Exmouth in February, MinRes Rosily travelled to Onslow for testing and commissioning before recently commencing operations. It joins an existing fleet of three transhippers now supporting Onslow Iron’s ramp up to nameplate capacity of 35 million tonnes per annum.

Each fully-enclosed MinRes transhipper measures 123 metres by 36 metres and has capacity to transport 20,000 tonnes of iron ore to ocean going vessels anchored 40km from the Port of Ashburton.

Transhipper MinRes Rosily

Transhipper MinRes Rosily

Executive General Manager Marine, Jeff Weber, welcomed MinRes Rosily’s arrival.

“Our transhipping operation is an integral component of Onslow Iron’s innovative transport solution that has unlocked stranded iron ore deposits in the West Pilbara,” Jeff said.

“It’s exciting to welcome the fourth transhipper to the fleet, with all vessels playing a critical role in the project’s ramp up.

“In the coming months we will welcome our fifth vessel, which will complete our initial fleet and set us up as the largest and most sophisticated transhipping operation in Australia.”

MinRes transhippers have a shallow seven metre draft when loaded with 20,000 tonnes, which avoids the need to construct a deep-water port and greatly reduces the project’s environmental footprint.

The operation is supported by two crew transfer vessels, which together play a key role within Onslow Iron's unique transhipping operation.

The project’s haulage, port and transhipping operations are fully enclosed to ensure dust-free transport of iron ore from the Ken’s Bore mine site, located 150km east of Onslow, to the Port of Ashburton.

Learn more about the Onslow Iron project.

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