2013 TROPEX 2013 was conducted off India's west coast. It included ships, submarines and aircraft from all Commands of the Indian Navy, with joint participation of units from the Indian Army, Indian Air Force and the Indian Coast Guard. Over 50 ships and submarines, and around 75 aircraft participated in TROPEX 2013, which concluded on 1 March 2013. The navy conducted manoeuvres, weapon firings and tactical evaluation. TROPEX 2013 also included an amphibious segment, involving around 2000 troops, tanks, amphibious vehicles and other equipment. TROPEX 2014 TROPEX 2014 marked the debut of the Indian Navy's new P-8I Neptune long range maritime patrol aircraft, nuclear submarine , and the Hawk advanced trainer aircraft of the Indian Air Force. The Indian Navy conducted large scale manoeuvres in all three dimensions (land, sea, air), across the Bay of Bengal, Arabian Sea and the Indian Ocean. Around 60 ships, including the aircraft carrier INS Viraat and submarines of the navy, and 75 aircraft, and assets from the Indian Air Force, and the Indian Coast Guard participated in the TROPEX 2014, which concluded on 28 February 2014. This year's TROPEX was aimed at testing combat readiness of the naval units. It also focused on validating the Indian Navy's war fighting doctrine and integration of newly included capabilities in its 'Concept of Operations'. The Indian Navy validated its network centric warfare capabilities, wherein, its recently launched satellite GSAT 7 was extensively utilised. TROPEX 2015 TROPEX 2015 was conducted from the end of January to 27 February 2015 across the Arabian Sea and the northern Indian Ocean. Around 50 ships, including the guided missile destroyer and anti-submarine warfare corvette , and submarines, including the nuclear submarine INS Chakra, from the three Indian Naval commands, along with more than 70 aircraft, including the P-8I Neptune, and assets from the Indian Air Force and the Indian Coast Guard participated. This year's TROPEX focused on validating the Indian Navy's concept of operations. The Indian Navy deployed two aircraft carrier battle groups, led by and INS Viraat to take part, thus demonstrating its capability of deploying more than one carrier task force at the same time. A statement issued by the Ministry of Defence read: "The exercise provided the right opportunity for the navy to integrate these acquisitions into its war-fighting concepts. TROPEX-15 also served to reinforce the Indian Navy's offensive capabilities across all dimensions, including Network Centric Operations, wherein, the