gas planning

  1. M

    Redundant Gas - thinking through my options

    Hi, I'm a UK diver (BSAC Dive Leader), and I also do a fair amount of holiday diving in warm waters. So far all my diving has been on single cylinders (12L or 15L), but I'd like to get into slightly more adventurous UK diving (gentle wreck penetration, light deco etc). With this in mind, I'm...
  2. LFMarm

    Question Dive time management - multi-level vs. square profile

    Hi all, Would love to hear feedback on the approach I am envisioning for managing real life multi-level long deco dives on CCR. Below is my approach and a couple of simulated examples to show how it would work in the water. Configuration is CCR with on-board oxygen; 2 AL80 tanks for diluent and...
  3. LFMarm

    Underwater off-gassing equivalent to a surface interval on air

    As I study to get ready for the CCR class, I discovered something that may be obvious to many but was definitely not to me. “Surface intervals are not always the most efficient way to off-gas nitrogen after a dive”. Depending on the blend, there is an optimal depth at which the off-gassing is...
  4. dewdropsonrosa

    Quick Reference: SAC & RMV Chart

    I'm brushing up on my gas planning math in preparation for my next cave diving trip (coming up in two weeks!). To save some space in my Wet Notes/not need to calculate consumption de novo for each dive, I made a chart of RMV for depths of 20-200ft at SAC rates of 0.4, 0.6, 0.8, 1.0, 1.5, and 2.0...
  5. Ed Hayes

    Gas Management / Made Simple

    Boston Sea Rovers Date: Saturday, March 9, 2019 Room: Essex Time: 1:00 PM - 4:00 PM Presenter: Ed Hayes & Gary Woods Sponsor: Evolution Scuba, llc. Fee: $40 a portion of your fee will be Donated to the Wounded Warrior Project Description: Throughout your dive education and or career you have...
  6. L

    100m dive

    All, Seeking advice for my first dive to 100m - I'm using iDeco Pro and am planning on using the following gas mixes: 1. Back gas (24L) - (12/52) 2. Deco gas and travel gas (11.1L) - (EAN32) 3. Deco gas (11.1L) - (EAN72) 4. Deco gas (11.1L) - (100% O2) Grateful for any thoughts / comments on...
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