Visible crew/equipment: After Ivan shoots the bird with the arrow, he takes one of its feathers and throws it. As it sails across the screen, the wires making it float are plainly visible. (00:19:15)
Visible crew/equipment: When Prof Fate sends the torpedo after the Great Leslie at the water speed record attempt you can see the wire just under the water pulling the torpedo towards Prof Fate's car when it detects his cars' exhaust explosions.