The C-Stoff tanking hatch removed, as seen from the right side (direction of flight is to the right). The recessed opening in the middle is the actual C-Stoff filler opening. Ahead of the opening a small flat T-Stoff header tank can be seen. The pushrod seen below the C-Stoff opening is connected to the rudder.
Photograph by Grant Newman of the Museum of Flight at East Fortune, February 2000