Seems simlar to the Luna class.. size wise, and that is 450 meters, which is bigger than an Intrepid but way smaller than a Galaxy or soverign.. and compared to the romulan birds, those are probably not bigger than 200 meters, quite small, and Orders of Magnitude smaller than the normaly huge romulan ships.. My thing is why wasn't the romulan fleet Cloaked?? I mean, they could have done like ST 5 with the bird of prey cloaking when it got closer?? Maybe?? The feddy ships are probably patrol craft, well armed, fast, etc. Copellious is probably close to the old Romulan neutral zone, which you have dozens of patrol ships in the area, maybe a number at starbases in the area that are a "Ready Fleet" to respond to any funny stuff.. I know Chambon isn't a "Starship Porn" guy.. but he does need to realize that it IS a thing and he does need to pay attention to the ships, doesn't have to be a fanservice extravaganza.. but just acknowledge it!