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The circumlunar plan involved 3 new spacecrafts. First the Soyuz A 7K spacecraft, capable of carrying three men, (2 men for a circumlunar flight) into space and returning them to earth. The 5.5 ton spacecraft has three modules, the orbital module, the re-entry module, and the service module.
The second new spacecraft is the Soyuz B 9K booster stage, with a fueled mass of 18 tons. After docking with the 7K, the 9K is capable of boosting the combined spacecraft out of earth orbit on a course to the moon.
The third new space craft is called Soyuz V 11k tanker. It has a mass of 5 tons. It is used to ferry fuel from the earth to the 9K Booster. It will take 4 tankers to fill the 9K booster with enough fuel to push the Soyuz 7K on a path to the moon.
![Soyuz A, B, V](https://i0.wp.com/www.spacerockethistory.com/wp-content/uploads/2014/12/soyuzabv2.jpg?resize=688%2C153&ssl=1)
Soyuz A, B, V
![Vladimir Chelomey](https://i0.wp.com/www.spacerockethistory.com/wp-content/uploads/2014/12/Chelomey_VN.jpg?resize=150%2C150&ssl=1)
Vladimir Chelomey
![Boris Chertok](https://i0.wp.com/www.spacerockethistory.com/wp-content/uploads/2014/12/chertok_2.jpg?resize=150%2C150&ssl=1)
Boris Chertok
![Soyuz 7K-OK](https://i0.wp.com/www.spacerockethistory.com/wp-content/uploads/2014/12/330px-Soyuz_7K-OKA_drawing.svg_.png?resize=150%2C150&ssl=1)
Soyuz 7K-OK