Next four navigation satellites operating under ESA Galileo system. This time spacecrafts will be delivered to orbit on atop of Ariane 5 rocket from ELA-3 launch pad at Guiana Space Center. All four are result of cooperation of OHB System (bus) and SSTL (payload). Weighing around 730 kg satellites will operate on GEO orbit of 23616 km × 23616 km with inclination at 56° for at least 12 years. This mission will be penultimate launch of FM class Galileo satellites, with last four planned to be launched in 2018.