of produced devices are exported. The main buyers of Ukrainian-made ultra-light aircraft are the United States, Australia, New Zealand, the United Kingdom, France, etc.. Since 2014, aerospace industry revenues have fallen by 80%. In June 2016, the Antonov Corporation merged with the state-owned military conglomerate UkrOboronProm, forming Ukrainian Aircraft Corporation within its structure. This merger was done to boost Antonov profits and the production rate. Currently, Antonov is working on two cargo planes: An-178, a cargo version of the An-158, and the An-132D, a redesigned version of the An-32. The An-132 is developed jointly with Saudi's Taqnia Aeronautics Company, featuring western avionics and engines. The roll out and first flight is due at the beginning of January 2017. The space rocket industry in Ukraine has been managed by the National Space Agency of Ukraine since 1992. The agency includes 30 enterprises, scientific research institutes, and design offices. Pivdenne Design Bureau is in general responsible for creating the Zenit-3SL carrier rocket. The National Space Agency of Ukraine is involved in cooperation with American Rockwell Int., as well as the Sea Launch project. The first stage core of the U.S. Orbital ATK Antares rocket was designed and is manufactured in Ukraine by Yuzhnoye SDO. Shipbuilding Ukraine is one of the 10 largest shipbuilding countries in Europe. There are 49 shipbuilding companies registered in Ukraine. They are able to build a wide range of vessel types: powerboats, barges, bulk carriers (dry cargo ship), tankers, liquefied gas carriers, etc. The USSR's collapse put Ukraine's shipbuilding into a long-term decline. This lasted until 1999 and was mostly due to a minimum volume of state shipbuilding orders. Between 1992 and 2003, Ukraine's 11 shipyards produced 237 navigation units for a total value of US$1.5 billion. Production facilities are not working near full capacity, and customers are not always timely in paying for services. The shipbuilding industry grew between 2000–2006, in line with the wider Ukrainian economic expansion at the time. State support and the opening of free economic zones, foremost at enterprises based in Mykolaiv were a crucial recent development in Ukraine's shipbuilding industry. Within the Mykolaiv Special Economic Zone, enterprises like Damen Shipyards Okean, Chornomorskyi (Black Sea) Shipbuilding Plant, 61 Communards Shipbuilding Plant, as well as the Veselka (Rainbow) paint and insulation enterprise are implementing investment projects targeted to raise efficiency and quality in primarily export-oriented vessels through production upgrades. The new engineering developments and