not bad, but watch out for mismatching time era's and roles. an rhib is 1980+, that gun certainly is not, the radar is....
also, I would suggest starting with an frigate size ship, with the underwater hull drawn, in your favorite time era (look at the ships at the main site to define which one is
) and try to find what drives the designs of these ships. the best way to do this is by drawing some real designs.
yeah, we say this to everyone who is new, but that is because it works
from this though, I can see you can draw at least a bit, and you should be able to find your way in our style just fine if you do the above described