The Aquafoils are originally the Flying Sub Models from Voyage to the Bottom of the Sea (1964). Stock footage of the ship in flight is the same that was used in the series.
One of the underwater craft used in the movie is the "flying sub" from the later seasons of the television series Voyage to the Bottom of the Sea (1964).
The main set, Tritan Control, was re-dressed, painted black and used as the Ape Training Center in Conquest of the Planet of the Apes (1972).
Robert Wagner is credited as "Special Guest Star". This is an unusual credit listing that first began with Jonathan Harris in his Dr. Smith role from Lost in Space (1965).