BAE Systems' facilities in Australia are upgrading the Royal Australian Navy's (RAN) two Anzac-class frigates, HMAS Perth and HMAS Anzac.
Under these upgrade programmes, BAE will provide the warships with 15 complex engineering changes, including enclosing the quarter-deck and modifications to accommodate the MH-60 Romeo naval helicopters.
In addition, the frigates will benefit from the relocation of the on-board gymnasium and radar cross section remediation works.
The projects will also see one of the vessels fitted with an electronic surveillance mast and supporting communications equipment, the company stated.
AE Systems Australia chief executive Glynn Phillips said: "Together with our Anzac Alliance partners, we have successfully implemented the ASMD capability and other significant engineering changes on the first of class HMAS Perth, HMAS Arunta, HMAS Anzac, HMAS Warramunga and HMAS Ballarat.
"Productivity on the ASMD programme has improved significantly from ship to ship demonstrating the value of continuous activity."
BAE is upgrading HMAS Perth at the Common User Facility at Henderson in Western Australia. The programme is expected to be completed by early December this year.
The upgrade work on HMAS Anzac is being performed in Sydney at Fleet Base East Garden Island, with work scheduled to finish this month.
When combined, works on the warships are expected to take more than 32,000 hours to complete, BAE stated.
Both HMAS Perth and HMAS Anzac received anti-ship missile defence (ASMD) upgrades in 2011 and 2014 respectively.
Recently, BAE Systems completed on-dock production activities associated with the ASMD upgrade of the RAN's fifth Anzac-class frigate, HMAS Ballarat.
The programme included upgrades to the vessel's combat management system and introduction of an infrared search and track system, as well as a phased array radar and dual navigation radar system.
Image: Royal Australian Navy's two Anzac-class frigates receive 15 complex engineering changes in BAE system facilities. Photo: courtesy of BAE Systems.