Mayak is a new family of Ukrainian launch vehicles under development by the Yuzhnoye Design Office, which would be manufactured by Yuzhmash. Due to the ongoing political and economic crisis in Ukraine, as of May 2016 the feasibility and timetable of the project are unknown. The family is built in a modular fashion on the basis of a single line of main engines with thrust of roughly 120 to 200 tonnes-force (1,200 to 2,000 kN) for the first stage (RD-801, RD-810) and 10 tonnes-force (98 kN) for the upper stage (RD-809K derived from RD-8). Engines, control systems and ground equipment are largely derived from components of existing rocket families Zenit and Tsyklon. The Mayak family is designed to cover small-lift, medium-lift and heavy-lift requirements. Published parameters of various configurations are: