Search results

I don't hold to that theory and wouldn't suggest to move time from shallow to deep, like 20/80 or VPM does. I think that exertion at depth increases the decompression obligation in every tissue, fast and slow. That's an argument to prefer for example 40/70 over 50/80, but not a reason to pick...

Standard answer ;-) : You never want to on-gas more. You want to keep fast tissues from bubbling too much, in order to avoid an early in-water DCS hit. His specific problem is that due to high work load in a short bottom time, his medium-fast tissues may be more saturated than usual compared to...

Your choice of GF_low was a reason why I brought up the little test with work load and extending bottom time in MultiDeco. If you assume faster on-gassing in your medium-fast tissues by exertion at depth, then you want to pull your first stop a bit lower and GF_low=30 is not as over-conservative...

different idea: since you have a small group of divers repeating the exact same profile many times, why not bring a Doppler bubble monitor and record their bubble grades? That could be interesting for them to see, how does it relate to exertion at depth, and also to adjust the decompression...

Funny, isn't it? But +50% more perfusion is not excessively pessimistic for a strenous working dive in warm water. Looking at DCS incidents statistics, exertion at depth such as swimming against a current is a major contributing factor to "undeserved" hits, indicating that this problem is...

For working dives, there's a different traditional method that you may have a look at. The effect of workload is faster on-gassing at depth by better perfusion, which is similar to longer bottom time in a non-working dive. In the old tables you would read at 1.5x bottom time for working dives...

Remember that your last deco stop is not 3m but 0m, and it's a very important one. Make sure you decompress well right after surfacing; exit slowly, take a good rest, hydrate. That'll make a bigger difference than just minimizing GFhigh far below what your body actually needs, which again...

The OSTC shows "Saturation" which I think is the same as Shearwater's "GF99".

In sidemount, there are two schools of how to setup the regulators: (A) long hose + short hose backup with bungee necklace, see for example (B) two hoses of same length and no bungee, see for example The method "always donate primary" works only with (B), whereas with (A) you always donate...

Top shelf balanced primary regulators have adjustment knobs for resistance and a dive/pre-dive Venturi switch. That's not necessary but nice-to-have for a little more convenience, with the drawback that you need to take care of it: Forgetting to set it will result in freeflow or hard breathing...

The Mares 82x has a rotating turret. I use two 22x without rotating turret. For a while I thought about replacing them, but then I found a swivel adapter for the 1st stage that helped a lot with keeping the drysuit inflator hose short and straight. So now I'm not looking for a rotating turret...

The English title is "Decompression - Decompression sickness"

"Avoid Mismatched 2nd Stages (or don’t buy a cheap octopus)" only partially agree here. Yes for sidemount or long-hose backup, but there are different considerations for the classical recreational octopus. Top shelf balanced primary regulators have adjustment knobs for resistance and a...

"His eyes are described as dilated, his regulator slipped from his mouth on two occasions because he was becoming unconscious and unable to keep it in himself and yet despite these obvious signs he was, in effect, drowning, Craig waited until the planned three minutes had elapsed before taking...

Best voltage to store them is about 3.92V. Avoid charging them above 3.95V or discharging below 3.6V unless you have to.

https://kaernten.orf.at/stories/3123972/ A German recreational scuba diver found the grenade. While examining his find today in shallow water it exploded and killed the diver. 53m deep lake Ossiacher See is small and beautiful (although not the most popular spot for scuba diving). Unknown to...

You don't need a new BCD, just get yourself properly weighted and any BCD will do. You often hear that you should do that with empty tanks, but that's sometimes impractical because you want to be properly weighted at the beginning of your first dive with full tanks, too. The trick is, that you...

There are many ways of attaching the tanks in sidemount. Loop bungees just the most popular if you have left/right valves, but not easy in your situation with two identical usual rental tanks. Please check out "toddy style" tank attachments: 5. Attaching Scuba Cylinders – TODDY STYLE and the...

After lower back surgery I shifted focus to diving in lakes / sweet water in sidemount config. Handling two small independent tanks is also better for your back when it comes to filling, transport, lifting gear out of the car, ... The worst for my back are large twin tanks from boat or from...

It depends on your tank size. The bcd is used to carry the weight of the gas in your tank. If you dive a small single tank then only little gas is needed in the bcd and it won't make much difference if you ignore the bcd and use only the drysuit. But when diving larger single tanks, doubles...