This is the fictional Lima-class amphibious assault ship (LHD) capable of transporting marines and equipment via landing crafts or rotary wing assets. The size of the Lima-class is around ~30,000 tons in displacement.
It's very easy to print and is suited to be printed in the size the model's in with few supports. Final result was really good in my Flasforge Finder.
This is part of a hobby project of mine that included making 200+ vehicles, aircrafts and naval vessels for a fictional armed forces (of the country of Acorsia).