Looking for Ship cannon? Get this 3D model from simeonbr via CGTrader for $2. Technical specs: 432162 polygons, 447539 vertices.
BLEND (Blender, filesize: 51 MB), OBJ (OBJ, filesize: 42.9 MB), FBX (Autodesk FBX, filesize: 20.1 MB), ABC (Alembic, filesize: 28.7 MB), DAE (Collada, filesize: 75.2 MB)