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skin diving with scuba apparatus
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Gauging DOT 3AL3000 SCUBA cylinder neck threads
In response to requests for clarification, from members in the Far East and Australasia, the following guidance is issued for SCUBA cylinders and valves that utilise the ¾" NPSM thread form.
ASSET recommends that technicians, involved in the assembly and maintenance of SCUBA cylinders and their valves, use the appropriate, calibrated, thread gauges as a means to ensure that they are both within tolerances and compatible with each other. Additionally, the technician should have received training in their use, as provided in the ASSET Dive Industry Technician’s and Cylinder Tester’s Courses and Manuals.
How to Avoid Isobaric Counter diffusion hits during trimix decompression
Isobaric Counter Diffusion triggered by breathing gas changes is predominantly a problem when carrying out Trimix dives that are deep enough and long enough to generate formal decompression stops that require the use of a hypoxic Trimix. An analysis program embodying these concepts to identify known unsafe ICD gas switching practices and unsafe decompression is made availableDecompression trends for extreme dive planning
Deriving the underlying laws and predictive mathematics for diving physiology, safe decompression, Oxygen toxicity tolerance, narcosis, and HPNS (High Pressure Nervous Syndrome) have challenged the minds of the worlds brightest scientists. That many of the victims of incorrect decompression fail to survive extreme decompression and be part of the observable phenomenon database further hampers progress. As a first topic in this series of articles we will take a more in depth look at decompression and how to survice it's more extreme effects.
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Shore Scuba Diving on Oahu - Drop in Anytime
Shore Scuba Diving on Oahu, Drop in Anytime! Some of the most fun that I have as a diver was on Oahu shore diving in Hawaii. Lots of great locations to chose from on Oahu, with 3 of my favorites Read more...
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SCUBA Diving Buoyancy and Breathing Visualization and the "Minds Eye"
I play Golf. I am OK neither good nor bad. I sometimes use a technique when I putt the ball on the green, it is called “Seeing the Putt”. Before I putt I imagine my body taking the putt, I see the ball leave the club, I see the ball follow the line I have read and I see the ball fall into the hole. This
visualization trick works on forming a mental image
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of what I am doing before I have done it, it takes from the power of the “Minds Eye”.
Similarly before we SCUBA Dive we can use this trick to help us create a more relaxed breathing pattern and better buoyancy and body profile.
Adapt the following example for your dive site as appropriate.
Imagine yourself moving though the water, your body profile is perfectly horizontal, therefore reducing drag, you hover in this position feeling the water around you. The water surrounding you is warm your breathing slow and deep – have you ever been this relaxed before? No part of your body moves, now if you want to go forward give a slow and high fin kick, feel the water glide over your wetsuit – look at yourself from outside your body, you know the SCUBA gear you dive
Article continues below...
Gauging DOT 3AL3000 SCUBA cylinder neck threadsIn response to requests for clarification, from members in the Far East and Australasia, the following guidance is issued for SCUBA cylinders and valves that utilise the ¾" NPSM thread form.
ASSET recommends that technicians, involved in the assembly and maintenance of SCUBA cylinders and their valves, use the appropriate, calibrated, thread gauges as a means to ensure that they are both within tolerances and compatible with each other. Additionally, the technician should have received training in their use, as provided in the ASSET Dive Industry Technician’s and Cylinder Tester’s Courses and Manuals.
How to Avoid Isobaric Counter diffusion hits during trimix decompressionIsobaric Counter Diffusion triggered by breathing gas changes is predominantly a problem when carrying out Trimix dives that are deep enough and long enough to generate formal decompression stops that require the use of a hypoxic Trimix. An analysis program embodying these concepts to identify known unsafe ICD gas switching practices and unsafe decompression is made available
with so
visualize it. You want to go up slightly so you breathe a little deeper, the air in your lungs gives you a slightly buoyant lift and you rise, now you want to go down so you exhale more air than normal emptying your lungs and you become negatively buoyant – remember the number one rule of SCUBA? Never hold your breath. Are you using your arms? If so stop your arms are ineffective under water, see how your fins work and use them and your legs as single unit to move and change direction. In your “Minds Eye” you are diving so effectively, you are using less air, and less energy and you are relaxed and you have not even got wet yet!
Your “Minds Eye” is powerful, remember that what the mind sees the body does
http://www.ssjscuba.co.uk
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Gauging DOT 3AL3000 SCUBA cylinder neck threads
In response to requests for clarification, from members in the Far East and Australasia, the following guidance is issued for SCUBA cylinders and valves that utilise the ¾" NPSM thread form.
ASSET recommends that technicians, involved in the assembly and maintenance of SCUBA cylinders and their valves, use the appropriate, calibrated, thread gauges as a means to ensure that they are both within tolerances and compatible with each other. Additionally, the technician should have received training in their use, as provided in the ASSET Dive Industry Technician’s and Cylinder Tester’s Courses and Manuals.
How to Avoid Isobaric Counter diffusion hits during trimix decompression
Isobaric Counter Diffusion triggered by breathing gas changes is predominantly a problem when carrying out Trimix dives that are deep enough and long enough to generate formal decompression stops that require the use of a hypoxic Trimix. An analysis program embodying these concepts to identify known unsafe ICD gas switching practices and unsafe decompression is made available
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