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47 Meters Down: The Next Chapter

Discussion in 'Scuba Diving TV & Movies' started by divinh, Mar 13, 2019.

  1. almostDIR

    almostDIR Barracuda

    # of Dives: 25 - 49
    Location: Finland
    255
    127
    43
    but they would not consume enough air to get into trouble during the whole film's runtime if they would lower their SAC by using fins :popcorn:


    I wonder why they even bother writing these scenes happening underwater in the first place. The cave sharks could as well fly mid air if they just want to do unrealistic and entertaining stuff
     
  2. Manatee Diver

    Manatee Diver Manta Ray

    # of Dives: None - Not Certified
    Location: Tampa Bay, FL
    676
    375
    63
    It operates exclusively on PSI/BAR per minute.

    Here are the calculations that the Teric does for the SAC rate, and then how it calculates the gas time remaining. Screen Shot 2019-08-28 at 11.14.53 AM.png
    Screen Shot 2019-08-28 at 11.15.17 AM.png
     
  3. MrVegas

    MrVegas Nassau Grouper

    # of Dives: 50 - 99
    Location: Ohio
    106
    54
    28
    Thanks -- that all makes sense. I'm a little embarrassed by my question now, so I appreciate the remedial math lesson.

    Anyway, to get somewhat back on topic, I guess the spgs in the movie could pretty easily display percent of air remaining. Why you would want that instead of estimated minutes remaining, I'm not sure. Except that if you did it as minutes remaining the audience would probably be wondering why the gauge only went down 10 minutes in 20 minutes of movie (as they were going deeper and swimming harder).
     

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