Hood said:My hunch was an Aichi E13A but I'm not sure the float struts match up correctly.
Apophenia said:Another clue is the missing outer wing panels. The Arado Ar 196 wings folded at the roots. The Aichi E13A1 wings folded at mid-span.
Check out the E13A1's folded wings and exposed propeller shaft on this photo:
https://commons.wikimedia.org/wiki/File:Aichi_E13A_at_Seletar_Airfield.jpg