Search results

Is the partial pressure law not applicable because the dissolved CO2 in the blood is in liquid phase? Is the narcotic effect of a substance a factor of it's molar concentration in the blood/tissues? Is the narcotic effect related to ambient pressure in the case of the inhalation of CO2 (ie...

Are you a certified solo diver? Were you diving with a redundant gas supply? If not, then at no point should an instructor leave you alone or tell you stay put while alone. What if you had an equipment malfunction? Where is your backup gas supply? Even if your buddy is close by, in a low vis...

Forgive me, my educational background is not dive physiology so please correct me if I am wrong as I am always interested in learning more about this area of study. I agree the change in partial pressure would be the same as the increase in the mole percentage of CO2 would increase the same...

Yes AS has closed their physical store as they are transitioning to an online store. Not sure who you did your OW with there but I know Ken Pon from AS is now teaching at Caribbean Dreams in Calgary if you were interested in completing your AOW locally (although I would pick Tahiti over...

Don't forget to add the balmy, tropical waters of Waterton and Minnewanka to your list :-) Here's a good Facebook group to join for local events, info, etc. if you're interested... Aqua Sport Also, the Alberta Underwater Council (AUC) is looking at hosting a monthly pool session at SAIT for...

I have a friend that really likes Subsurface (personally I use the software that came with my Shearwater).

Do you have any resources on this?

The Thai government just sank (21) fishing boats off of Tao a few months ago. I believe a third of them have been found. I'm not sure if anyone is doing regular trips out to them. I dive with Big Blue Tech when on Tao. They've got their own small boat so they might be able arrange something for...

Interesting. I had not thought of that. I suppose the reversal of pulmonary engorgement and reduction of thoracic blood volume may have to be done relatively slowly in order to avoid damage to the alveoli. Do you know of any research articles or case studies on this topic? Breath holding, and...

The two concerns I would have during the breath hold are ascending and the build up of CO2. I would ensure I was neutral to start and that I stayed at depth (ascending even a few meters during a breath hold may cause lung injury). A short period of hyperventilation afterwards might help...

That is correct Bert. Similar to nitrogen, the deeper you go, the higher the partial pressure and the greater the narcotic effect. That is why CO2 is a potential hazard for deep technical dives. Simple tasks at extreme depths can cause CO2 to build up and quickly incapacitate a diver.

It would be impossible as I have no idea where to find cylinders that are 20 lbs positively buoyant. 3.1 lbs...

Cost, service life, durability, and station fill pressure limitations seem to be the reasons why they have not become popular. It would be great to have that extra gas in the same size envelope. Luxfor's specs show their hoop-wrap is very similar in buoyancy characteristics to their Al80's (with...

Bert, holding your breathe would conserve gas. When diving at depth, the body has more than enough oxygen in the tissues (because of the increased partial pressure) to survive without breathing for an extended period of time. The potential problem with breathe holding at depth is, as others have...

I agree with you Bill. Not sure how transparent and accountable the Indo government is when it comes to marine park fees. In all fairness though, it's not just the Indonesian government. My government (Canada) wastes an incredible amount of money on inefficient systems and agencies. I would love...

I recently did an 11 day LOB in Raja and paid $250 USD in marine park fees. My math puts that one boat at $20 000 in marine park fees in seven trips. I would assume the many local dive guides and crew members employed by these LOBs would spend their wages in the local economy. Not to mention...

Remember with the finger spools that you need to cut some line off in order to expose the holes to allow the boltsnap to attach to the spool. As well, a good rule of thumb is to have an amount of line equal to 1.5 times your deepest deployment depth. The additional line is needed as current can...

Might be a bit overkill but have you considered a drysuit?

Cheers @NetDoc I feel like a new man

Mods, could you please change me to crookshanky Thanks.