Other mistake: In the early scene where the submarine has surfaced, titanosaurus emerges from the water and seems to be standing on the ocean floor. Just a few minutes earlier, the sub was at a depth of 250 meters, ergo the dino has to be walking on water.
Terror of Mechagodzilla (1975)
1 other mistake
Directed by: Ishirô Honda
Starring: Akihiko Hirata, Katsuhiko Sasaki, Katsumasa Uchida, Tomoko Ai
Revealing mistake: You can see the threads moving the submarine underwater. (00:04:55)
Katsura Mafune: Please kill me! Destroy my body! Inside me is the controller! Mechagodzilla's brain's installed in my stomach!