Welcome to ScubaBoard, an online scuba diving forum community where you can join over 205,000 divers diving from around the world. If the topic is related to scuba diving, this is the place to find divers talking about it. To gain full access to ScubaBoard (and make this large box go away) you must register for a free account. As a registered member you will be able to:
Participate in over 500 dive topic forums and browse from over 5,500,000 posts.
Communicate privately with other divers from around the world.
Post your own photos or view from well over 100,000 user submitted images.
Gain access to our free classifieds marketplace to buy, sell and trade gear, travel and services.
Use the calendar to organize your events and enroll in other members' events.
Find a dive buddy or communicate directly with scuba equipment manufacturers.
All this and much more is available to you absolutely free when you register for an account, so sign up today!
If you have any problems with the registration process or your account login, please contact the ScubaBoard Support Team.
I was just lookingat my computer dive profile for yesterday's dive and noticed a few oddities.
First, for those of you who think California diving is cold, well, I guess you're wrong. According to my 'puter, the water temp on my second dive started at 87 degrees and, after 2 1/2 minutes at 54 feet, it was still 80!
I knew I should have worn my 3 mm :shakehead
So the computer sat in the sun for awhile. Still, would you expect it to take nearly 10 minutes before adjusting to the true water temp? Bottom temp at 53 feet was actually 59 degrees. I think.
Temperature problems don't bother me. I can feel the temperature in my bones regardless of what the computer says.
What does bother me is the "air time remaining". I was diving a steel 72 with about 2200 psi to start. According to my trusty computer, at 2:15 into the dive, while resting comfortably at 54 feet, I had only 1 to 5 minutes of air left :11: Two minutes later at 30 feet, I supposedly had 16-20 minutes left.
Now I hoover with the best of them but I really don't recall breathing hard or fast ANYTIME during these dives.
Now I was adjusting my BC air a bit when I was on the bottom due to the unfamiliar 7mm I was wearing. Do these computer sample instantaneously or do they average it out. The dive profile is displayed in 15 second interval sso I assume there is some smoothing going on.
Looking back at other dives, I see that there are several where the log tells me I had zero minutes of air left.
Makes you wonder what I was breathing for the remaining 5-8 minutes I was underwater on those dives.
I generally surface with at least 500 psi so I'm not emptying these tanks.
The zero air time could have an explanation.
The Oceanic Atom (which is the computer that I have)calculates remaining air time based on the end pressure that you have specified,the depth you are at, your rate of consumption and I think the safety stop requirement (I have to check this). When it warns you that you have no air time remaining it actually means you have enough air left in your tank to surface at a normal ascent speed and still end up with the end pressure that you have specified.
My husband and I both have Oceanic Veo 250's, and when we got his out of the package , brand new, never touched the water, his temperature reading was way off wack. Mine said 84 degrees (about right), and his said 53 degrees (ain't no way no how).
"A veteran - whether active duty, retired, national guard, or reserve - is someone who, at one point in his or her life, wrote a blank check made payable to The 'United States of America', for an amount of 'up to and including my life.'" (Author unknown)