Starfleet transport vessels used in the mid 24th century with a crew of 27 and capable of carrying over 500
USS Denver NCC-54927
While transporting 517 colonists to the Beloti Sector in 2368 the Denver struck a gravitic
mine left over from the Cardassian wars and took heavy damage. The
USS Enterprise NCC-1701-D was called to
assist with the survivors. "Ethics" - TNG.