Yorktown class

The Yorktown-class was a series of United Earth battleship starships in Earth Starfleet service around the time of the 22nd century. The Yorktown-class was commissioned as an early-model Human military vessel.

The Yorktown class continued to serve in the Federation Starfleet after its formation in 2161. They continued to serve well into the 23rd century. One Yorktown class battleship was assigned to a fleet just prior to the Omega Directive in 2272. The ship was destroyed alongside three other ships when dampeners shut down the fleet's shields. Then the defense grid vaporized the Yorktown class starship and the other ships in the fleet. The Yorktown class starship was captained by a man named Somerset.

Specifications
In 2159, these vessels were equipped with six dual phase banks, two phase banks, and eight photonic torpedo launchers, and were protected by polarized hull plating. But by 2161 these ships recieved a similar refit as the Daedalus class, the refit included better Deflector shields, Phaser Banks, and Photonic torpedo Launcher Banks. 

Known vessels
USS Washington (NCC-403) • USS Adams (NCC-410) • USS Wilson (NCC-416) • USS Shoemaker (NCC-422)