• Welcome to ScubaBoard


  1. Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

    Benefits of registering include

    • Ability to post and comment on topics and discussions.
    • A Free photo gallery to share your dive photos with the world.
    • You can make this box go away

    Joining is quick and easy. Login or Register now by clicking on the button

Petrel 20ft safety stop?

Discussion in 'Shearwater Research' started by Julian55, Jan 5, 2013.

  1. ianr33

    ianr33 Solo Diver

    # of Dives: 200 - 499
    Location: Wah Wah Land
    5,166
    972
    113
    Well,yes.

    The stops the Predator gives are required,obligatory,decompression stops. Not optional "safety" stops. Decrease the conservatism before the dive if you don't want to stop for so long,but be aware of what you are doing and the possible consequences.
    Not fulfilling a decompression stop should only be done for a very,very good reason, e.g medical emergency or perhaps large hungry sharks. If you can't finish the stops because you don't have enough gas then you have majorly screwed up!
     
    616fun likes this.
  2. KWS

    KWS ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 500 - 999
    Location: SE TEXAS
    4,711
    1,177
    113
    I agree 100%.... As in any tool you have to know how to use it.

     
    616fun likes this.
  3. Slamfire

    Slamfire Solo Diver

    # of Dives: I'm a Fish!
    Location: Langley, British Columbia, Canada
    1,322
    258
    83
    Julian, did you get the Petrel from Ocean Quest? I heard that they recently became dealers.

    One thing to note is that the Petrel is intended to be used by divers in a different context than those divers using 3 min safety stop at 15 feet. The safety stop is intended to be used on dives that stay within the NDL done by divers that have no training or knowledge for planned mandatory decompression dives. Most divers these days do not get any planned decompression training. The 3 min safety is intended to be used in this context. The Petrel is not.

    Once you obtain knowledge in planned decompression dives, you realize that there is much more to a safer ascent behavior than to just stop for 3 mins at 15 ft (even while still keep it within the NDL). The need for a computer to give you an automatic 3 minute count down at 15 feet usually goes away with this realization.
     
    KWS likes this.
  4. Julian55

    Julian55 Barracuda

    # of Dives: 200 - 499
    Location: New Westminster,BC
    298
    8
    18
    Yes I got it from Ocean Quest, I asked them to bring it in. I'm aware of the differences, I was told some of more advanced computers do but OC didn't know as they hadn't sold them(Shearwater)before. I was going to get a Kaon but at $799, plus $99 for PC interface for only $50 more the Petrel has all the Kaon has and more, plus it feels much tougher and the customer service is top notch.

    After doing a few dives and lots of research, plus many helpful posts and PM's here I think I have learned more in the last month about diving and decompression than the 6 years of diving so far. Now to sign up for an entry tech course!
     
    Jax and KWS like this.
  5. HIGHwing

    HIGHwing IDC Staff Instructor

    644
    431
    63
    Explain "conservatism". The Cobalt runs a proprietary version of RGBM, which means what exactly?
     
  6. ianr33

    ianr33 Solo Diver

    # of Dives: 200 - 499
    Location: Wah Wah Land
    5,166
    972
    113
    Just watch out for the depth limit on the Predator.

     
    Jax likes this.
  7. exposure

    exposure Tech Instructor

    # of Dives: 2,500 - 4,999
    Location: Paris, France
    247
    42
    28
    Julian, sign up your tech course and you'll realize how a wrist slate can replace a computer :wink:


    Sent from my iPad using Tapatalk HD
     
  8. vascuba67

    vascuba67 Angel Fish

    # of Dives: 5,000 - ∞
    Location: Burke, VA
    16
    0
    1
    The Atomic Cobalt is under recall. I'd personally stay away from that one. I love my Petrel. If recreational divers want to purchase, then go for it as long as they understand the true purpose of the computer. Certainly, any of the puck computers under $500 will do just fine for managing two gases.
     
  9. Jax

    Jax Deplorable American ScubaBoard Supporter

    # of Dives: 200 - 499
    Location: AZ TX
    26,025
    7,890
    113
    Hey! That's a Pursuit, Darn it! :mad:
     
  10. HIGHwing

    HIGHwing IDC Staff Instructor

    644
    431
    63
    One advantage to not having the safety stop automatically presented is that I don't have to rush into the bait ball of people trying desperately to get their computers to activate the safety stop. I usually just hang out with the wife at about 25-30ft and watch the action above.
     
    Bhtmec2, Dr. Lecter and Jax like this.

Share This Page