USS Mayflower II

In the Kelvin timeline, the 'USS Mayflower (') was a starship, a Mayflower-type ship of the line in  service in the 2260s decade. Mayflower entered service as a successor to the previous USS Mayflower (NCC-1621), lost at the Battle of Vulcan in 2258. 

History
In 2258, the USS Mayflower (NCC-1621) was a Mayflower-type vessel. Its hull consisted of a round saucer section, with a pair of warp nacelles hanging below the saucer on short nacelle pylons. 

Ships lost at the Battle of Vulcan were replaced with namesakes before the year was over. 

Thus, another Mayflower was launched between 2258 and 2262. Improvements over its predecessor included a deflector dish inserted into the bottom of the saucer, in front of the ventral sensor dome; and a -inspired extension leading from the impulse engines at the rear of the saucer to the bridge dome in its center. This structure contained the shuttlebay.

During the war between the Federation, and  in the trilateral, starting on stardate 2262.45, the Mayflower (II) served as a Federation science vessel. At one point, the Mayflower was attacked by an Independent ship under contract with the Orion Syndicate.