The Chamber (2016)HD
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About the Film
When a special ops unit commandeer a submersible to locate a mysterious item at the bottom of the Yellow Sea, the pilot of the sub (Johannes Bah Kuhnke, Force Majeure) is forced to navigate into dangerous, North Korean waters. When an explosion causes the sub to overturn and take on water, it becomes clear that there won't be any rescue and not all of them are going to escape. The Chamber also features a soundtrack by James Dean Bradfield (Manic Street Preachers) and stars Charlotte Salt (The Musketeers), James McArdle (Star Wars: The Force Awakens), and Elliot Levey (The Lady in the Van).
Good plot - obvious filming issues
The idea behind the film is good. The problem is the inside of the submarine looks totally different from outside and much older.
Also you could see that most of the equipment was switched off and trying to drive such a submarine with computer control did not make sense.
I understand it's a uk film, but defiantly low budget. The production team even managed to miss the usual sound of sonar.
So clearly there were things that didn't make the film feel like they were really underwater, even the look of daylight from the top of the submarine gave the game away. So a good attempt but could be better.