Shey Ke Mothership
When the "Shey Ke" company announced the availability of the mothership as "open to the public", many argued it is too dangerous to let civilians buy these mammoth armed ships but the ship still remained in production. Only the largest corporations can afford the price tag but those that can buy it can easily take on the army if they wish.
This represents the fastest capital ship available to date for anyone with a big enough wallet. The Shey Ke motherships usually protects important cargo transports belonging to corporations that you would not wanna mess with.