User:The doctor/Yorktown

=USS Yorktown (NCC-1717) (I)=

The USS Yorktown (NCC-1717) was a Federation class I/class IX heavy cruiser starship in service to Starfleet in the 23rd century. 

Service history
The Yorktown, with an assigned registry number of NCC-1704, was one the initial batch of Constitution-class starships that were ordered for Starfleet appropriation on stardate 0965. She was built to Mk I specifications and was launched on reference stardate 1/9005, entering service with a new registry number, NCC-1717. 

The Yorktown was later refit to Mk III specifications around stardate 2/0308. 

On stardate 2/1102 the Yorktown was ordered to be scrapped and decommissioned by Starfleet. When the ship was finally decomissioned, she was restored to her original configuration, but because her bridge module was badly damaged, the original bridge of the USS Enterprise (NCC-1701) was installed instead. Following completion of the restoration work, the Yorktown was declared a museum piece, and by 2370, was attached to Starbase 178. 

=USS Yorktown (NCC-1717) (II)=