How long until Soverermmeny become operational for? Into the 2050's? Or do they have a life span of just 2030's?
Assuming a 35-year service life, the first pair of Sovs (136 and 137) will retire from the fleet in 2034 and 2035, followed by the second pair of Sovs (138 and 139) in 2040 and 2041.How long until Soverermmeny become operational for? Into the 2050's? Or do they have a life span of just 2030's?