Spaceship Dreadnought Imperator Low-poly 3D model is available on CGTrader for $45. Original author: msgamedevelopment. Specs: 16400 polys, 16400 verts.
OBJ (OBJ, filesize: 579 MB), FBX (Autodesk FBX, filesize: 580 MB), TEXTURES (Textures, filesize: 579 MB), PNG (PNG, filesize: 579 MB), UNITYPACKAGE (Unity 3D, filesize: 621 MB)