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Are Suunto Zoops super conservative?

Discussion in 'Computers, Gauges, Watches & Analyzers' started by Alex Locke, Aug 27, 2017.

  1. yle

    yle Instructor, Scuba

    # of Dives: 500 - 999
    Location: Southern California
    Those advocating for longer dive times and not wanting the computer to tell you to end your dive before you want to go... you can always set your computer in "gauge" mode and then dive as long as you like, or at least until you run out of air.

    If you prefer an a less conservative computer only because it "allows" you to stay down longer than a Suunto, what happens when your computer tells you it's time to end your dive... but you don't want to? If you're going to rationalize ignoring a computer's advice (and that's all it is... just advice; the computer doesn't require you to do anything), why bother even having a computer? A watch and depth gauge combo will give you the same information, is much cheaper, and will never ask you to end your dive.
    WinfieldNC likes this.
  2. gopbroek

    gopbroek Solo Diver

    # of Dives: 1,000 - 2,499
    Location: Lewisville TX
    While I am not an advocate of lying to your computer I have seen a number DM's in Cozumel who had Suunto's and while diving air would set the computer to EAN 28. In most cases they were either 'gifted' the computers by clients or found them on the bottom. How they made made it to the bottom is unknown but the standard joke is they were thrown overboard. Thru trial and error the value of 28% O2 appears to allow them to finish their daily dives with their clients on more liberal computers.
    rek_diver likes this.
  3. rek_diver

    rek_diver Banned

    # of Dives: 200 - 499
    Location: NY
    This makes perfect sense. No surprise it's common practice among DMs who do this upwards of a half a dozen times per day and lived to tell the tale.
  4. Steve_C

    Steve_C Contributor Rest in Peace

    # of Dives: 500 - 999
    Location: Raleigh, NC USA
    This makes absolutely no sense to me. I dive two computers. One a ZOOP and the other a bit more liberal. I consider them pretty much equally safe. They agree on dive 1. On dive 2 the zoop is more conservative. I often clear the zoop on dive 2. Sometimes I will finish the dive with a few minutes of stop left on the zoop. But I always stay within NDL on the more liberal computer and complete the safety stop it recommends plus a couple of minutes.

    Making a choice between two algorithms is completely different from throwing all algorithms out the window and staying down past NDL.

    Also, given all my dives are multilevel, a watch and a depth guage would be much much more conservative than the zoop.
  5. Snoweman

    Snoweman Contributor

    # of Dives: 100 - 199
    Location: Atlanta, GA
    Yes, they are conservative (as everyone else has posted). I have one. I have been told by more than one DM how conservative they are. I recently purchased a Perdix AI. As it was a wrist computer, and I had another HP port open, I left my SPG/Zoop/Compass on my Octo. My first dives with Perdix was in Grand Cayman. The operator helped me with my initial set up (pairing of the transmitter). He also set my Zoop to the Nitrox mode to "fool" it into being as liberal as possible (I still dive on air). My "fooled" Zoop was in deco at least five minutes before the Perdix (not fooled).
  6. gfaith

    gfaith Solo Diver

    # of Dives: 100 - 199
    Location: Desert SE of NM
    @Snoweman I assume you had the Perdix in Rec mode which GF profile did you use?
    • Low (45/95)
    • Med (40/85)
    • High (35/75)
    And this was on the first dive?
  7. Snoweman

    Snoweman Contributor

    # of Dives: 100 - 199
    Location: Atlanta, GA
    I have it set to low. It has maddened me that I have gotten into deco with the Zoop on a few occasions. My dives are typically less than 45 minutes and I rarely go below 90'. I watch my computer religiously.
  8. gfaith

    gfaith Solo Diver

    # of Dives: 100 - 199
    Location: Desert SE of NM
    Here is a link @stuartv provided in an earlier post. I think the excel file demonstrates the difference well.
    stuartv likes this.
  9. scubadada

    scubadada Diver Staff Member ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Philadelphia and Boynton Beach
  10. myshadeofred

    myshadeofred Contributor

    # of Dives: 200 - 499
    Location: Virginia
    My recent biggest issue with the zoom isn't the conservative side, but the safety stop timer. It does not count down the seconds and in the event you have swell, it will restart. This was frustrating to me with my cousins sons because they were taught to do 3 min (and you should) but those stinking computers reset more than once and our 3 minute safety stop was over 5 minutes. Needless to say, the 14 year old was worried about his air and they didn't understand. But they were not coming up. It is too sensitive to swells and I don't like that you can't change the safety stop depth. Other than that, they are great for novice and experienced. I don't like them myself as I like a little more options with my dives.

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