USS Europa (NCC-97640)

The USS Europa (NCC-97640) was a Federation starship, the tier 6 battlecruiser in Starfleet service in the 2410s decades. Together with the USS Europa (NCC-1648) (II), the prototype replaced the USS Europa (NCC-1648) and honored its loss at the Battle of the Binary Stars in 2256. (* website: "The Stats of the Europa Class!")

Service history
Ensign Elyos and Lieutenant Whetu of the Utopia Planitia Fleet Yards discussed the recovery of Yard 39 and several hulks of Starfleet ships hastily abandoned there when when the star TL-9139 erupted and flooded its system with baryon radiation in 2259. This included the second USS Europa NCC-1648, a starship. With the radiation suddenly diminishing in the year 2411, Starfleet was able to recover Yard 39 and its assests. (SS STO (Utopia Planetia: The Mystery of Yard 39))

As a result, Vice Admiral S.J. Hemphill spearheaded the Advanced Starship Design Bureau (ASDB) project to develop a new starship class based on the Nimitz-class. On stardate 87751.8, the Utopia Planitia Starfleet Yard hosted the commissioning ceremony of the USS Europa (NCC-97640), first of its class. (SS STO (The Past Reborn))

Around the same time, the formerly derelict and now recovered Nimitz-class Europa re-entered active service, upgraded to the same specifications as the prototype Europa. ( website: "The Stats of the Europa Class!")