There is a Japanese newsreel and individual pictures from it showing the IJN Kaga on its way to Pearl Harbor. The pictures show the Kaga having something on the stern of its flight deck. It looks like a gantry crane having two uprights with a bar between them that is above the height of the aircraft. Is this a crane used for moving aircraft? Are there other, better pictures of this piece of equipment? Did the US Navy have a similar piece of shipboard equipment in WW2?
I saw a 1/700 Hasagawa model of the IJN Kaga with the stern elevator raised. The WW2 newsreel/photos seem to show the item in question having only two uprights and those too far apart to be elevator supports.