Unnamed Y class starships

List of unnamed Earth starships of the Y class.

Survivors
Two unnamed Y-class starships were part of a rag-tag fugitive fleet led by Enterprise, following the Xindi destruction of Earth in an alternate timeline. Together, the fleet headed for Ceti Alpha V. 

Orbit of Verex III
In 2155, this unnamed Y-class starship was in orbit of Verex III when the arrived at the planet to retrieve several personnel that were captured by the Orions.