USS Opaka (NCC-91784)

The USS Opaka (NCC-91784) was a Federation starship, a long-range science vessel in the 25th century, in Starfleet service in the 2400s decade. 

History and specifications
In the year 2409, the Opaka was present when the 2800, a temporally displaced Dominion fleet, invaded Deep Space 9. During the evacuation of the station, the Opaka came under attack from Jem'Hadar ships but was saved by the intervention of an Allied vessel.