Near the end, Duncan and Judy are chasing Eric across sea ice with open water, when all of a sudden, they are running down a hill they are not seen climbing.
When the first lot of ship-to-ship transfers is being made, there is no attempt to match who is in the basket and what they are doing between studio and location shots.
When Eric falls into the sea at the end of the fight, the loose 'ice' is floating much too high, showing that it is actually expanded polystyrene.
Much of the chase/fight action on the 'ice' is clearly filmed on hilly ground on land - when there is no mention of the ships being sunk anywhere near land.
In fight scenes - e.g. in the ship's hold and on the ice - there are several visible 'invisible' cuts where stunt-people replace actors and vice versa within one supposedly continuous shot.
In the storm scene, the water on the deck and some of the debris moving around the deck do not match the roll of the ship in the waves.
During scenes set in the Antarctic, at supposedly below zero (Celsius) temperatures, we never see breath vapor.
The direction signs (finger posts) at Capetown airport's apron pointing towards Paris and Durban are very nearly at 180 degrees to each other. But Paris is approximately north by northwest from Capetown, and Durban east by northeast, so it should be about 90 degrees.