Even at its most subversive, Star Trek still has to have a few certain kernels of established tropes to really feel like Star Trek—one of those being a ship for our captain and crew to boldly go in. Deep Space Nine, of course, naturally subverted both of these things, giving us a space station and a commander. But…
Source: io9 – Happy 25th Birthday to Star Trek’s Defiant, the Lean, Mean Starship of Deep Space Nine