Sorry for the late reply, majicbar
My remark about the shadows was ironic.
I think the shadows on the "craft" in this foto are not quite consistent with the rest of the foto.
The "craft" itself IS the damage.
It is not in the negative.
The paper foto you see is damaged.
The "craft" is a triangular piece of the uppermost layer of the foto paper that got loose and rolled upward.
Hence the shadow and the 3D appearance.
It IS 3D.
This is the reason why it is white.
It hasn't been degraded by UV-light as much as the foto-layer.
The fishermen are looking out to the horizon for fellows or the weather.
They are NOT looking upwards where the "craft" is.
The edges of the "craft" are far too sharp to be far away.