A Soyuz-2.1b carrier rocket with a Fregat booster and 36 British OneWeb communications satellites has been launched from the Vostochny spaceport in Russia’s Far Eastern Amur region, a TASS correspondent reported on Friday.

The Fregat booster carrying the communications satellites will separate from the rocket’s third stage nine minutes after the launch. The satellites will separate in several stages, with the entire process taking 3 hours and 51 minutes.

This was the seventh launch of OneWeb satellites and the fourth purely commercial launch from Vostochny. With these satellites in orbit, the OneWeb constellation will reach 218.

The launch was initially scheduled for May 27 but was postponed for a later date due to minor problems detected by automatic sensors. Later, Arianespace, the launch operator, said the carrier rocket’s electrical equipment needed to be replaced before the launch.

The first six OneWeb satellites were orbited by a Soyuz-ST carrier rocket from the Kourou spaceport in French Guiana on February 28, 2019. Another 34 satellites were delivered into outer space on February 7, 2020 and the same amount on March 21 from the Baikonur spaceport.