Check out Trireme Low-poly 3D model purchase 3D model on CGTrader for $30. High-quality mesh by StrategybuildersAssets: 42138 polys, 21865 vertices.
BLEND (Blender, filesize: 3.21 MB), OBJ (OBJ, filesize: 2.53 MB), FBX (Autodesk FBX, filesize: 746 KB), STL (Stereolithography, filesize: 2.01 MB)