Largest rocket artillery by tube count

The Jobaria (monster) Defence Systems Multiple Cradle Launcher is a 122-mm rocket artillery system developed by the United Arab Emirates and Turkish contractor Roketsan. It consists of a 10-wheel semitrailer towed by an Oshkosh Global heavy equipment transporter. The semitrailer is the mount for four rocket launchers with a total of 240 122-mm rockets with a maximum range of around 37 km. One full salvo from the Jobaria can devastate an area of 4 km². The Jobaria was first revealed to the public in 2013.