The
Vostok-K ( meaning
"East"),
GRAU index 8K72K was an
expendable carrier rocket used by the
Soviet Union for thirteen launches between 1960 and 1964, six of which were
manned. It was derived from the earlier
Vostok-L; however, it featured uprated engines to improve performance, and enlarge its payload capacity. It was a member of the
R-7 family of rockets.