Date: 18 December 1973
Time: 11:55:00 UTC
Date: 26 December 1973
Time: 08:50:35 UTC
Duration: 7 days, 20 hours, 55 minutes, 35 seconds
Call Sign: Kavkaz (Caucasus)
Soyuz 13 was short mission to do some of the experiments planned for the Salyut 2 station which failed in orbit. Since this Soyuz did have solar arrays, this is some question as to whether or not this should truly be grouped with the Salyut/Almaz ferry flights. (See description of Soyuz types)
This also marked the first time that both the US and the USSR simultaneously had men in space (Skylab 3).