snorkling

[scuba steve irl]

Originally Posted by Midnight

Steve,
You are mixing up snorkelling and fin-swimming.

Snorkelling is what the old spear fisher used to do to stalk and keep and eye on their quarry.

Fin swimming is what CFT clubs insist you do a number of before they let you near scuba equipment.

TBH although useful there are far more important qualities in a diver than high levels of fitness, such as a full understanding of their equipment, the physiology of a diver and the ability to remain CALM in all environments.

Some of the best divers I have met would not be able to compete in track & field but I would not hesitate to accompany them on any dive.

Safe diving,
Midnight

snorkling and snorkel diving . not just the part of doing endless lengths on the surface with finns

snorkling and snorkel dive teach the user the feeling of breath holding and the feeling of co2 rising . the feeling of slight panic and how to deal with it .

Im conducting some researh for my own benifit and maybe infuture for others . this is just a starting block for my research .

[Midnight]

Originally Posted by scuba steve irl

snorkling and snorkel dive teach the user the feeling of breath holding and the feeling of co2 rising . the feeling of slight panic and how to deal with it .

Teaching your body to tolerate higher levels of CO2 is not a good idea for scuba as it can allow the body to accept and therefore be affected by higher PP of CO2.

There are far less hazardous ways of increasing trainees comfort levels under the water.

Regards,
Midnight

[A. Berk]

Originally Posted by Midnight

There are far less hazardous ways of increasing trainees comfort levels under the water.

Snorkelling hazardous? I would say it was more hazardous to engage in scuba without having the skills/ability/fitness to snorkel to a reasonable standard. But then I'm a berk

Breko

[scuba steve irl]

Originally Posted by Midnight

Teaching your body to tolerate higher levels of CO2 is not a good idea for scuba as it can allow the body to accept and therefore be affected by higher PP of CO2.

There are far less hazardous ways of increasing trainees comfort levels under the water.

Regards,
Midnight

it teachs the student what the feeling are and ho to cope . raising PPco2 is not a bad thing . raiseing it to high levels are . this is where they can suffer from shallow water blackout .

[A. Berk]

Originally Posted by scuba steve irl

raising PPco2 is not a bad thing . raiseing it to high levels are . this is where they can suffer from shallow water blackout .

200% wrong Steve, shallow water b/out is caused by reduced PO2 which cannot sustain consciousness and also a reduced PCO2 which does not kick-in the urge to breath strongly enough before you pass-out

roBek

[Scubee]

Originally Posted by scuba steve irl

it was a listing of a major dive org in the UK .

I'm rather interested in this apparent research. Could we have some specific link - which organisation? is it on the web? in a magazine? how did this research take place?

I go snorkelling on occasion, but only when on holiday, and ony if the water is to shallow to make shoving a tank on my back a waste of effort.

I first snorkelled when I was aobut 9, we lived in Cyprus, and I used to spend all day in the sea.

I only take a snorkel diving if I am undertaking a dive where I have to take it - teaching or something. It gets in the way otherwise.

[scuba steve irl]

Originally Posted by A. Berk

200% wrong Steve, shallow water b/out is caused by reduced PO2 which cannot sustain consciousness and also a reduced PCO2 which does not kick-in the urge to breath strongly enough before you pass-out

roBek

the urge to breath is caused by the ppco2 build up . when on a snorkel dive the urge to breath is not stimulated for slightly longer . it is when the ppco2 rises to a certain level . the ppco2 is greater than the ppo2 and the body switches into a blackout stage

the increased ppco2 is not a bad thing at small levels ...
IMO the body needs to feel the slight elevation and this feeling so that we can react calmly .

anyway we have moved anyway from what the thread was meant for

[A. Berk]

Originally Posted by scuba steve irl

the urge to breath is caused by the ppco2 build up . when on a snorkel dive the urge to breath is not stimulated for slightly longer . it is when the ppco2 rises to a certain level . the ppco2 is greater than the ppo2 and the body switches into a blackout stage

Steve, I am on your side with your original OP but that above is a load of ar5e. The stimulation to breath is effected when hyperventilation is practised beforehand. After a normal breath, that stimulation will occure at the same rate as O2 is consumed and you'll hit surface gagging for breath. Black-out is caused by the PO2 falling through your boots because CO2 has been flushed before breathhold through hyperventilation.

Berko

[liamm]

I snorkel a fair bit, on a warm day in clear water its another way to get wet. Im happy down to 5m after that i suppose id rather put tanks on, but if thats not an option i'll haiiply snorkel. But then again theres spots near me where you can pick up scallops in 3m and see the sea bed at 15m on a good day.

[davidcarson]

Originally Posted by Eoin

As a bit of a techie, I don't bring a snorkle on a dive as it would get in the way (and useless for a rebreather dive!).
If I want to snorkle I go for a snorkle.

I agree Eoin