davit crane manually rotated with a bar and manually lock with a "T" pin and manual winch. 1/4 plugs greaser on top bearing ring to grease the center between bearing ring, 1/4 plugs for greaser hole of the crane base to grease pipe inside to help rotation. snatch block with shackle.
hook block not my model I borrowed from GC .
renderings and likes are welcome
DWG (AutoCAD, filesize: 1.35 MB), IGE (IGES, filesize: 8.53 MB), 3DS (3D Studio, filesize: 839 KB)