Continuity mistake: During the battle a railing on a pirate ship falls off, only to be seen in the next shot intact, then missing in a subsequent shot.
Revealing mistake: While the Seaview rocks violently back and forth from the concussion of the under water explosion, the pencils, folders, papers, etc., on the navigation table do not move.
Visible crew/equipment: The shadow of the camera is visible as Captain Brent walks the Seaview's corridor.
Visible crew/equipment: The camera shadow is visible when the medical team removes the injured crewman on the stretcher.
Continuity mistake: The video set turns on before Admiral Nelson activates the "on" switch.
Continuity mistake: When the four divers exit the Seaview, each has a flashlight. When the reach their destination only three have flashlights.
The Return of the Phantom - S2-E26
Deliberate mistake: Kroeger's ghost takes over Crane's body when the captain is injured, but still alive. In "The Phantom Strikes," Kroeger told Nelson his host had to be dead first. This "fact" needed to be altered in the sequel so that Crane could survive to be rescued at the end. (00:16:00)
Continuity mistake: Part of Admiral Nelson's torn uniform changes position on his shoulder as he is being checked out in sick bay.
The Wax Men - S3-E24
Revealing mistake: The heavy metal ring securing the hatch that leads from the flying sub to the Seaview control room bounces up and down as Crane enters the control room.
The Wax Men - S3-E24
Revealing mistake: The explosive squib is visible under the uniform of the wax Chip Morton right before Captain Crane shoots him.
The Wax Men - S3-E24
Continuity mistake: When Captain Crane is shooting the wax crew members, his pistol runs out of ammo, locking the slide open. The next shot shows Crane still shooting without reloading a new magazine.
The Wax Men - S3-E24
Visible crew/equipment: When the clown enters Admiral Nelson's quarters, on the left side of the scene the arm of an extra or set crew can be seen.
Fatal Cargo - S4-E7
Revealing mistake: The seam on the back of the gorilla costume is visible as he attacks the doctor's campsite.
Character mistake: Captain Crane has Bentley collared and is questioning him. An alive Lee Crane asks Bentley "why did you kill me?" He quickly changes it to "why did you try to kill me?" (00:10:40)
