(WIP). Upgrades proposed under the WIP included installation of a phased-array radar, a second Mark 41 vertical launch system. The WIP was scrapped near the end of 1999, and plans for a less ambitious anti-ship missile defence (ASMD) upgrade were made. In 2004, Tenix, Saab, and the Department of Defence formed a Private Public Partnership to upgrade the anti-ship missile defence (ASMD) capability of the Anzac class, through the installation of CEA Technologies' CEAFAR and CEAMOUNT active phased array radars, a Vampir NG Infrared Search and Track system, and Sharpeye Navigational Radar Systems. On 18 January 2010, Perth docked at the Australian Marine Complex in Henderson, Western Australia for the ASMD upgrade. Both of the frigate's masts were replaced, and the operations room layout was improved. Additional ballast was required to maintain stability, and the combined weight increase brought the ship's full load displacement to 3,810 tons. After completion in October 2010, Perth was used to test the modifications, with trials completed in July 2011. Approval to upgrade the other seven RAN Anzacs was granted in November 2011, with work on the A$650 million refits to begin in 2012. As of March 2017, all eight ships of the RAN had completed the upgrade. From Warramunga onwards, the frigates were launched with the ability to carry and fire the RIM-162 Evolved Sea Sparrow Missile (ESSM) as a replacement for the Sea Sparrow missile; these were quad-packed into the Mark 41 launcher for a payload of 32 missiles. Warramunga was the first ship in the world fitted with the ESSM, and the first test firing was conducted aboard on 21 January 2003. The modifications entered operational service aboard three ships in June 2004. A CEA Technologies solid-state continuous wave illuminator was also fitted as part of the ESSM system. From 2005 onwards, the RAN began fitting the Anzacs and the Adelaides with Harpoon Block II missiles in two quad-tube canister launchers. The Australian Anzacs were fitted for but not with the launchers, but the originally planned location on 02 deck was found to be unsuitable, and the launchers were relocated to 01 deck, in front of the bridge. Around the same time, the RAN began to fit all frigates deploying to the Persian Gulf with two M2HB .50 calibre machine guns in Mini Typhoon mounts, installed on the aft corners of the hangar roof. Two TopLite EO directors are used with the