The DY-750 has a direct linage to the sub light DY-100 cargo transport. In Star Trek: Continuum she serves as a support, and repair ship.
The model itself is just a re-texture of my SSC Leif Ericson model in Star Fleet colors. I figured since the ship was designed by the late Matt Jefferies. She would make a fine addition to the ST:C TOS era fleet. She has a fully functional animated hangar bay.
Dy-750 Transport