BACK TO TOPIC!
To be honest, I'm not sure what the topic is, but it looks almost like something which belongs more in Trek Art than here.
It is the only officail known Earth- Romulan war ship...
I don't think we can consider correct. What causes you to believe that the Kelvin
had any part whatsoever in the Earth-Romulan War or that it even existed at that time? That conflict would have to predate the events involving the Kelvin
(in this movie) by something like seventy years.
(I've also converted your images to links to avoid page-stretching. See the policy concerning image size here