This refit of the old *Constitution*-class is best evidenced via the *U.S.S. Enterprise*, under the command of a then-Admiral Kirk, circa 2271. This class of starship featured an increase in crew compliment from its predecessor to approximately 520 persons. Also new to this refitted class was a virtual upgrade of all key systems. A new bridge module was installed, and main engineering received an upgrade, along with the replacement of the warp nacelles. In 2285, just prior to its scheduled retirement, NCC-1701 was destroyed by Kirk, to prevent his ship from falling into Klingon hands. Other vessels from this class include the *Enterprise*-A and the *U.S.S. Yorktown*. [Paramount EULA](https://paramount.xyz/license-agreement) TM & © 2022 CBS Studios Inc. © 2022 Paramount Pictures Corp. *Star Trek* and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.