Siroco was deployed to East Timor as part of the Australian-led INTERFET peacekeeping taskforce from 10 October to 25 November 1999.

The renunciation was justified by the identification of several incompatibilities between the ship and other hardware in use by Portugal, including its inability to support the operation of the Portuguese EH101 helicopters.

[7] Following the Portuguese withdrawal, on 7 August 2015, the Ministry of Defense of Brazil announced the acquisition of Siroco for the Brazilian Navy for €80 million.

[8][9] Provisionally commissioned into the Brazilian Navy on 10 December 2015, the ship officially incorporated the vessel into service on 10 March 2016.

[9] The purchase of the ship allowed an increase in the amphibious and aerial capabilities of the Brazilian Navy, as well as contributing to the maintenance of the logistics of the United Nations Stabilisation Mission in Haiti and humanitarian aid thanks to the hospital center that Bahia has.