The Americans entered the space relatively late, but their ships were built very carefully, with regard to other nations' experiences. Yanks developed advanced engine technology and made the propulsion units compact and small, compared to British engines. This USS Jefferson
, a Montana
-class cruiser is the best wxample of American space ship concept.
It's armed heavily for its size, but it is fast and reasonably agile. However, it lacks heavy armour.
This on took about 1,5 hr, HB mechanical pencil used.
I'm going to do some fighter and bomber sketches and take a break from ships, I think I'm burning out.
But I'm also working on Ostfront, page 8.