just for the "f" of it, decided to have an closer look:
- Stern, I don't think it should be flat, it should be rater of two different angle, the lower section is right up and down, while the top section is slightly inward.
https://rogueadventurer.files.wordpress ... eme-73.jpg
- The hull depth: you have drawn the ship with hull depth of approx 4 meters. Formidable class hull depth is 6 meters (39px).
https://en.wikipedia.org/wiki/Formidable-class_frigate
- rest is just small details, like for example how porthole looks like they could perhaps look better with dark grey corners.
Oh the shape of you'r ruder is quit wrong...
Thank you for you comment, but is that drawing from blueprints correct? ship of that class usually don't have tunnel thruster due to the speed and there are no marking on the actual ship.