Lieutenant Aronnaux's collar insignia changes between shots.
In the submersible they reach 23,000 feet and a temperature of 35F. The actual temperature of the ocean at 1,000 feet is 34-39F, so at their depth it would be much colder.
Captain Farragut's name is pronounced at least three different ways.
Capt Nemo screams after the Nautilus makes contact with the seafloor and has already exploded, before that.
When discussing with Lt. Comm. Conciel the location of the Scotia, Captain Faragut orders the ship to change course and "go to 75 knots". That's the equivalent of 139KM/h (86 MPH), a speed that a battleship is far from achieving.
Women did not serve on submarines until 2010.
In the opening scene the Captain orders the sub to a depth of 800ft. and the abyssal plain of the Mariana trench. The plain actually begins at closer to 10,000 feet below the surface with the trench itself dropping to the lowest point on Earth, 6.8 miles below.
The actual temperature of the ocean at 1,000 feet is 34-39F. When the sub is ordered to descend to 800 feet, a crew member mentions that the temperature is rising to 67, 68 degrees. This could not be so warm.
The commander orders the sub to go to 800 feet. The U.S. military uses metric measurements extensively to ensure interoperability with allied forces.
When Lorenzo Lamas and the other Lieutenant first meet at the USS Lincoln, they have Lieutenant bars on one collar and a Master Chief Petty Officer anchor on the other collar.
The USS Lincoln is an aircraft carrier, not a battleship.
The rank insignia of LCDR is actually an Army Majors pin, and it is over sized for a coat, not a color device.
The SS Abraham Lincoln was actually the SS Lane Victory, a WWII cargo ship now a docked museum at San Pedro California. This is apparent when the Lane Victory's name is clearly visible first on an emergency Ax in a gangway and then immediately after on a life preserver swaying outside the cabin porthole.
The Lt Commander's fingernails are long and brightly polished which is non Navy.
When the Lt.Commander sits down in the bridge you can clearly see a Docker's label on the right rear of her uniform pants.
In the 68th minute, Lt. Arronax identifies his vessel as the USS Scotia, then as the 'US diScotia,' before correcting himself.
When Aronnaux is reporting the sub's position after they escape, he reports it as latitude and latitude, instead of latitude and longitude.