The contract is a nine-year Alliance agreement with an option to extend the deal for six years.
The initial value of the contract to Saab is over €63m. Further orders can be expected during the course of the agreement.
The order includes modernisation and improvement of, among other things, the ships' combat management system and fire control system. The order will see development work in Sweden and Australia and will involve the Australian Defence Material Organisation and the Tenix shipyard.