Looking at the concept pictures of Polaris, Port Olisar's small pad dimensions might actually reduce the size of the hangar. As you can see from the picture with the gladius, a small ship would have ample room around it, and the hangar would be around 30-40 meters long and perhaps 25-30 meters wide, and at least 10 meters deep. With those dimensions, even medium ships, like Cutlass, would fit in it. Snugly, perhaps, but fit nevertheless.
idk, it's a capital ship with a hefty price tag, corvette or not I'd kinda wish it could carry at least one medium ship or couple of small ones, perhaps 4 snubs.