 Post production on " Space Seed " began on December 23 , 1966 , and ran through February 5 the following year . The Westheimer Company produced the majority of effects in the episode , but the scenes of Enterprise and Botany Bay in space were produced by Film Effects of Hollywood who were not credited on screen for their work . Botany Bay utilized a design Matt Jefferies created prior to the USS Enterprise . It had been previously labeled " antique space freighter " , and was built by Film Effects of Hollywood . The creation of the ship miniature caused the episode to go over budget by more than $ 12 @,@ 000 ; " Space Seed " actually cost a total of $ 197 @,@ 262 against a budget of $ 180 @,@ 000 . By this point , the series was nearly $ 80 @,@ 000 over budget in total . The Botany Bay model was later re @-@ purposed as a freighter for the episode " The Ultimate Computer " . 
