The Soviet LK lunar cabin, designed for a single cosmonaut, weighed approximately 12,257 pounds—about one-third the weight of the Apollo lunar module.
Notes on verification
Mass figures corroborated by Astronautix and Wikipedia; single-cosmonaut design confirmed by multiple sources; 'about one-third' comparison to Apollo LM is a fair approximation (~36-38%).
Sources
- The First True Spaceship (smithsonianmag.com)
- http://www.astronautix.com/l/lk.html (astronautix.com)
- https://www.globalsecurity.org/space/world/russia/n-1-lk.htm (globalsecurity.org)
- https://www.globalsecurity.org/space/library/report/2007/deep-politics-1-1.htm (globalsecurity.org)