Not an original thought but, some day, I wish someone would accuse me of, "Breathing like a girl", then I know I have a good SAC rate. There are a gazillion techniques out there, so I'd suggest you experiment and figure out one that works best for you. A friend of mine doesn't count, but he tries to make sure he takes twice as long to exhale as he does to inhale. That might work for you or it might not, and that's okay. Sometimes it works, sometimes it doesn't, but I've found that having some kind of inner cadence to my breathing helps me keep it under better control. If stuff starts happening and I can't maintain it, I try to at least keep up a 4 count. If it feels like I'm breathing too fast, I'll extend the exhalation to a 12 count. If there are no stressors and I'm just enjoying the critters and the peace, I go with a slow 8 count. I've been able to lower my SAC rate by forcing myself to breathe to an internal count. I generally consider my SAC rate acceptable if I a) come back alive, b) have at least 500 psi left in the tank when I break the surface, and c) know all my buddies are safe. It might be current, temporarily losing a buddy, getting excited about the biggest or smallest octopus I've ever seen - most recently it had to do with buddies who were having major gear problems. 7 I know there was something off about the dive. But that makes me sound like a much bigger a**hole than I actually am. My first thought was "Asking what's a good SAC rate is a bit like asking, how long is a piece of string?".
#DIVELOGDT SAC RATE FREE#
So SAC or RMV is helpful to find ways you can improve, but it's most helpful to know what your consumption is so you can plan well and make informed decisions as you dive.Īlso, keep an eye open for the free gas management semiars that guys like Bob, Brian and Scott occasionally teach they are very highly recommended. Some of the factors are not things you can change, some are things you can change. Just to be clear, I wasn't (and I don't think Lynn was) saying that you are obsessing, just that *what* your SAC or RMV is is less important than you knowing in general what your range of consumption normally is like. Good SAC is was a nice relaxing dive, high SAC I musta been fighting something, trim current etc. But I guess I kinda look at it now as my dive mpg. I'm very comfortable in the water, I like to mosey, but need work on my trim so I struggle with the last 1500 psi as it seems my tank (HP 130) wants to go ass up. I skimmed over the suggested reading and plan to sit down and read it carefully later, thanks for the link. Linedog wrote:OK, I don't obsess about it I was just wondering mostly because it is what it is.
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