Soyuz 7K manned spacecraft concept (1963)
|Country of origin||Soviet Union|
|Applications||Carry up to three cosmonauts to lunar orbit.|
|Derivatives||Soyuz 7K-OK (first Soyuz generation to fly manned)|
Sergei Korolev initially promoted the Soyuz A-B-V circumlunar complex (7K-9K-11K) concept (also known as L1) in which a two-man craft Soyuz 7K would rendezvous with other components (9K and 11K) in Earth orbit to assemble a lunar excursion vehicle, the components being delivered by the proven R-7 rocket. 
The 7K would have been equipped with cameras and sensors to study the lunar surface during the flyby, at a distance of 1,000 to 20,000 km from the Moon's surface. Total flight time would have been 7 to 8 days.