Check out Guided missile frigate 3D model on CGTrader for $42. High-quality Polygon mesh mesh by Iskhafel.
STL (Stereolithography, filesize: 6.21 MB), OBJ (OBJ, filesize: 21.8 MB), BIP (KeyShot, filesize: 7.96 MB), FBX (Autodesk FBX, filesize: 4.88 MB)