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47 Meters Down: The Next Chapter

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

  1. virtualRuben

    virtualRuben Angel Fish

    # of Dives: 100 - 199
    Location: Wolphaartsdijk, The Netherlands
    22
    6
    3
    Like an spg that displays comments based on the amount of air left? For example, in order from high to low:
    You're fine - You're still fine - Time to turn back - Surface please - Maybe you should start worrying - You're still breathing? - Shark bait
     
    MrVegas likes this.
  2. MrVegas

    MrVegas Nassau Grouper

    # of Dives: 50 - 99
    Location: Ohio
    107
    55
    28
    WARNING: minor spoiler alert.

    Okay -- as it difficult to truly "spoil" this movie -- I'll reveal this one. The spgs in "47 Meters Down Uncaged" display air remaining in terms of "percent." In other words, "60" on the spg indicates 60% of air remaining.
     
  3. Jcp2

    Jcp2 ScubaBoard Supporter ScubaBoard Supporter

    495
    371
    63
    I wonder why no fins?
     
  4. MrVegas

    MrVegas Nassau Grouper

    # of Dives: 50 - 99
    Location: Ohio
    107
    55
    28
    I wondered this too. (Although there is a brief explanation in the film.) I think the real reason is that fins block the camera too much. Depending on what angle you were shooting from, the fins could take up a lot of screen space. Or maybe the fins stir up stuff more than just feet.
     
  5. Chavodel8en

    Chavodel8en Barracuda

    # of Dives: 100 - 199
    Location: Oakland, CA
    478
    257
    63
    Since this is scubaboard,

    They need to learn to frog kick, and to stay in horizontal trim.
     
  6. Jcp2

    Jcp2 ScubaBoard Supporter ScubaBoard Supporter

    495
    371
    63
    I was thinking about the spg, and maybe with an AI computer, you could develop a “time to empty” metric similar my car’s range and miles remaining calculation. It would change according to depth and breathing rate, but we already have indicators that are state conditional like NDL time and car mileage already.
     
  7. Manatee Diver

    Manatee Diver Manta Ray

    # of Dives: None - Not Certified
    Location: Tampa Bay, FL
    694
    396
    63
    They already have that, most AI computers provide air time remaining.
     
  8. MrVegas

    MrVegas Nassau Grouper

    # of Dives: 50 - 99
    Location: Ohio
    107
    55
    28
    Interesting -- do you have to input the tank size into the computer before you start? (And what would happen if you forgot to switch the size from, say, an HP120 to an LP72?)
     
  9. GreggS

    GreggS Barracuda

    # of Dives: 200 - 499
    Location: Thomasville, NC
    493
    204
    43
    You do not. Mine takes the pressure reading at the beginning if the dive regardleas of the tank size and calculates the remaining air time down to the minimum air pressure I have set. I have my minimum set at 500 psi so my DC will tell me how much air time I have left until I reach that setting.

    The air time will fluctuate depending on depth and air used. For example, I could be at 95 ft showing 10 minutes left but if I ascend to 50 ft it would change and show a longer time. Heavier breathing due to exertion is also a factor. All this is done automatically.

    I use a Suunto Vyper Novo.
     
  10. cerich

    cerich ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 5,000 - ∞
    Location: Georgia
    6,528
    3,257
    113
    why would you?

    The computer has the pressure starting , pressure drop with respiration in real time and depth, easy calculations after a few mins of baseline gathering. It doesn't need to know cylinder size for more than "good enough".
     

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