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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.Vigilance urged when treating decompression illness with US Navy table 6A
Satahip, Thailand 2005 was the location for the first hyperbaric technician course run by the British Diving and Diseases Research Centre (DDRC) - An organization set up to study the effects of pressure and provides hyperbaric chamber oxygen treatment facilities and medical training for divers, technicians, nurses and doctors worldwide. During the course, the use of the various USN tables for the treatment of decompression illness and was studied. Technician trainees also had the opportunity to visit monoplace chambers at the Queen Sirikit Naval hospital to witness the use of hyperbaric oxygen to treat skin infections that did not respond well to other techniques. For divers, the treatment of DCI generally results in the use of two US tables. Table-6 for type I DCI-pain only symptoms and skin rashes, and USN treatment table 6A for the treatment of type II DCI-Arterial Gas Embolism. Unfortunately, table 6A is also notorious amongst for causing DCI amongst attending medical personnelWorld record deep dives made using new decompression technique
A new decompression diving technique based on the Combined Decompression Model CDM-18 that provides the knowledge base used by two previous world record breaking deep divers is made available to the diving public. A spreadsheet implementation of the CDM-18 model analyzes any dive profile and breathing gas combination for correct decompression methodology, clearly identifying any profile abnormality or breathing gas change that would likely cause DCSFirst Internationally recognised Dive Technician Courses to be run in Thailand
Mermaids Dive Center, Pattaya, Thailand to Teach the ASSET Approved 10 Day Dive Industry Technician (DITC) Training CourseDivers Breathing Air compressor technical data now available on-line
www.scubaengineer.com creates an online database of compressor servicing information expanded to include all past and present Bauer and Coltrisub Compressor service manualsFirst steps to improving Scuba tank safety in Thailand
Mermaids Dive Center, Pattaya opens Thailand's first combined Hyrostatic and visual inspection station for testing scuba tanks to international specifications. The UK designed system features traceable measurements of scuba cylinder abnormalities to US,UK and European CE standards and utilises a seperate test station for carrying out the latest magnetic eddy current equipment capable of detecting invisible SLC cracks that have cause several fatal scuba cylinder explosions
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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 Read more...
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All About Scuba Fins
Most scuba divers glide underwater better when they use scuba fins. Propelling yourself underwater with your feet alone will give you poor thrust, in addition to the weight of scuba diving equipment you are carrying.
Free divers prefer using very long scuba fins and mono fins because they allow better underwater propulsion with fewer leg movements.
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Scuba fins are also referred to as swim fins, and if you are outside North America, they are commonly known as flippers.
Here's a bit of trivia you may find interesting: when he was a young boy living near a river in Boston, Massachusetts, Benjamin Franklin devised a pair of swim fins. His swim fins were two thin wooden pieces that are shaped like an art palette. His swim fins helped him move more swiftly in the water. Benjamin Franklin isn't the only famous person who tried to create something that would make moving through the water faster. Painter, scientist and inventor Leonardo Da Vinci also played around with the idea of swim fins.
Two individuals who were working independently of each other were the first to create a working, practical version of swim fins. They are Frenchman Louis de Corlieu and American Owen Churchill. In the early 1940s, the US Navy became interested in the swim fins that Churchill designed for use by the US Navy's underwater demolition teams. Most sporting goods stores and surf shops carry swim fins that sport Churchill's design.
Eventually, swim fins evolved in response to the unique needs of swimmers and scuba divers. Today you will see swim fins in varying types and designs. For instance, swim
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
fins for scuba divers have wide fins. Because scuba divers carry heavy scuba diving equipment and gear with them underwater, scuba fins that are wide can help them overcome water resistance. Snorkelers, on the other hand, need lightweight fins that are also flexible. Ocean swimmers, bodysurfers and lifeguards tend to use swim fins that remain on their feet as they move through large surf.
There are swim fins that have a water vent through the blade. The water vent opens backward on the underside and opens forward on the upper side. When the hip joint flexes, water goes backwards out of the vent in the fin. These swim fins are often referred to as "jetfins." However, the term is actually a trade name. There are also swim fins with blade ends that split, mimicking the tail of fish.
What To Expect On Your Discover Scuba Diving Experience
If you are doing a PADI Discover Scuba Diving Experience, which is the most popular program of its type, they will start you off with some paper work and introduce you to your instructor. Other Read more...
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Scuba Diving
The introduction of scuba gear (an acronym for Self-Contained Underwater Breathing Apparatus), has redefined underwater diving altogether. Through the advances of technology, scuba gear allows Read more...
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Important Components of a Scuba Regulator
Some basic component: Either an A-Clamp or a DIN fitting must connect the regulator to the pillar valve or the diving cylinder.A Clamp – An a-clamp is the more Read more...
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Scuba Diving - It Ain't What You Do - It's the Way That You Do It
Some dive organizations appear to be hell-bent on getting as many people as possible to scuba dive. They are then able to release amazing statistics that suggest that everyone and his dog is scuba Read more...
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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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