The Star Trek Voyager - Eliter Force: Graphic Overhaul Project(GOP)is a mod, that basically recreates the Voyager with high definition textures and a new OpenGL renderer.
Note that the orininal game quality was actually much lower than shown here on modern systems. For the comparison shots i have not used the new openGL renderer or the HD texture pack, but the config file was still the optmized one, which f.exp. boosts the geometry level.