
Discover the importance of diving suits for underwater exploration. From material to design, learn about the key features to look for.
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Understand the potential risks of scuba diving and how to minimize them. Learn about the most common dangers and how to stay safe.
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This guide has all the information you need for starting scuba diving & helps you get the most out of your underwater experience.
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If you are planning a trip to the Tubbataha Reefs Natural Park, a liveaboard is the only way to experience the beauty of this underwater world. In this article, I will discuss the best liveaboards that are available for exploring the Tubbataha Reefs Natural Park.
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Sidemount cylinder trim is a headache for many sidemount divers. This illustrated guide will help you diagnose the problem & find the solution
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Are You Ready For Solo Diving? by Andy Davis The issue of solo diving often comes up in conversation amongst divers and the activity…
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The Philippines is a diver's paradise, with an abundance of stunning and diverse marine life, vibrant coral reefs, shipwrecks and crystal-clear waters
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A comprehensive guide to advanced wreck diving techniques, equipment, skills and protocols. A must-read for wreck divers at all levels.
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Are Some Scuba Courses more Equal than Others? Don’t pay good money for bad training. Undertanding these factors will help you identify the best scuba…
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A sidemount pouch, or pocket, is used to stow ancillary diving equipment when sidemount diving. It clips to square D-rings on the read harness via two double-end boltsnaps.
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I observe lots of sidemount divers experiencing frustration with their kit; and it's often due to their sidemount cylinder band positioning. There's actually a very simple principle that determines band positioning.
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The Value of Progressive Scuba Training – ‘Putting Another Dollar In’. by Andy Davis When I talk with divers and read the online scuba forums…
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Performance Development for Technical Divers Observe – Analyze – Adapt by Andy Davis As a technical diving instructor, a primary aspect of my work is…
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Technical versus Recreational Scuba Diving: Why is there a need for Rules, Boundaries and Limitations? by Andy Davis There is currently a strong debate about…
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The ability to horizontal hover when scuba diving is the benchmark of fundamental skills proficiency. These tips will help you master hovering
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Scuba Diving Safety Protocols: Buddy Separation by Andy Davis Losing your buddy is an easy way to ruining a good dive. Being alone underwater can…
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The benefits of streamlined dive gear and how to achieve it with your own scuba diving equipment. Small kit changes can have big effects.
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The balanced rig principle for diving describes a calculated approach to the amount of weight which can be jettisoned in an emergency
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How to improve your diving ascents & descents for safer and more comfortable scuba dives. This article can change your diving.
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How to control your breathing & scuba buoyancy for more comfort, confidence and competency as a scuba diver.
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An honest guide to finding a high-quality wreck diving course to give you the skills, knowledge & proficiency for real safety inside wrecks
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The Importance of Deep Stops: Rethinking Ascent Patterns From Decompression Dives An abridged version of this deep stops article was originally in DeepTech, 5:64; and…
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Stable diver trim is the foundation for good buoyancy control and efficient propulsion. It also helps conserve the marine environment.
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How to perfect your scuba weighting. Get this right & your buoyancy control will be much easier. Advice not taught in Open Water courses
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This is how you achieve great buoyancy control when scuba diving. There are a few key things to know, then you will find it easy
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What are the buoyancy control benefits for scuba divers? The reasons why it is worth devoting time & effort to developing core diving skillset
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The benefits of improving scuba buoyancy control & how it can be developed in training & practice.
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Explaining decompression stress, micro bubbles. Sub-clinical DCS may not merit a medical emergency, but it should be understood and respected.
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Advice to determine which sidemount BCD will best fit your needs as a diver. Use these criteria to choose the most suitable dive gear.
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My review of the best technical diving computer available in 2023. Full-size and watch sized computers with trimix decompression function.
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Is there a best ascent speed for scuba diving or is it simply a case of slower is better? Here are the facts to help you improve dive safety.
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Scuba diving skills taught in a kneeling position cause a plethora of problems for divers. Training in neutral buoyancy is very important!
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A 'how to' guide for scuba diving skill development. A systematic tiered approach to ingraining fluent & intuitive dive proficiencies.
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DCS and the Immune System. How bubbles trigger an immune response that can make or break your body's fight against decompression sickness.
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How to: Air Sharing In A Scuba Diving Emergency Don’t Get Gas Mugged! I see lots of debate on scuba diving social media about optimal…
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What scuba training agency is best for technical diving? This advice will help you the best scuba training agency for your technical diving training A…
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Are AI dive computers a valuable investment for divers? Honest pro advice on using transmitters with air integrated dive computers.
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Balanced Rig Principle: improve diving safety with a calculated approach to the overall buoyancy dynamic. Survive BCD failures without drama.
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Decompression sickness types and symptoms. There are 4 medical catagorizations of DCS, along with sub-clinical DCS, aka decompression stress.
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It is vital to prepare for technical diving courses. Follow these steps for the best chance of success in your tech training.
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Technique and video showing how to tie a DIY regulator bungee necklace for your hogarthian or sidemount short hose regulator.
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Using Your Hands Whilst Scuba Diving by Andy Davis Many novice divers wish to improve their air consumption during dives and increase their relaxation and…

An overview of high pressure nervous syndrome | HPNS | Hyperbaric deep diving malady | Causes, symptoms, treatment | By Andy Davis

Technical Wreck Penetration How much diving experience is needed? I often get asked how many dives should a technical wreck diver have before they…
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Hollis SMS100 Sidemount Modifications by Andy Davis I regularly have sidemount students bring the Hollis SMS100 for their courses. The SMS100 is a good sidemount…

An overview of compression arthralgia | Hyperbaric deep diving malady | Compression arthralgia causes, symptoms, treatment | By Andy Davis
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Being able to judge your diving ascent rate is an invaluable safety skill if your computer or bottom timer fails. These tips show how!
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What is the best way to prepare for technical diving training? Improve your success in technical diving training by following these steps to prepare yourself…
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The Physics of Diving – Scuba Gas Laws A concise explanation of the critical scuba gas laws for divers by Andy Davis Scuba diving is…
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Sub-clinical DCS, decompression stress and post-dive fatigue. The impact of microbubbles on diver vitality and health.
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The technical diving experience paradox - acquiring more experience increases the opportunity for complacency to creep in & decrease safety.
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Comparing three gradient factor settings on a 60m trimix dive plan to discuss off-gassing efficiency and DCS risk.
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Perspective on scuba world depth records: human physiology versus the limitations of diving science and technology.
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Comparative dive review of the XDeep Stealth Tec versus the Hollis Katana 2 sidemount BCDs. Specifications, features, options, prices, performance
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Sidemount training varies enormously in quality. Read these tips to identify the expertise and experience you need in a sidemount instructor.
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Reviewing sidemount harness kits that you can buy to make a homemade sidemount rig. You'll just need to add a wing and your choice of bungees.
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A comprehensive 'how to' guide to pony cylinder benefits, selection, gas planning and usage. Everything you need to know about pony cylinders.
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The benefit of adding a low-profile waist buckle to your sidemount system.
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What is a pony cylinder? Why are they recommended for wreck divers? This article answers your questions.
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Nylon-Braided Regulator Hose Diving Emergency On Wednesday, 22nd July 2015, I had to complete a real-life diving emergency air-sharing ascent with a technical diving student because…
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A nice modification to create a removable XDeep Stealth Classic wing lower attachment.
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The history and evolution of Mexican and Florida cave sidemount BCD designs. Understand these principles to choose the right sidemount gear for your needs,
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This XDeep Stealth modification adds redundant buoyancy to the Classic, Tec or Rec sidemount BCDs. It is a simple oral inflation system.
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A comprehensive guide to sidemount diving. What it is, the history, the equipment styles, how it is configured, gear setup and everything else you need to know.
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My dive-tested review of the Deco Sidemount BCD. It's my favourite travel system for warm-water recreational sidemount.
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An honest appraisal of the training given on recreational Deep Diver courses versus the risks that exist on deeper dives.
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Expert tips to help prevent costly mistakes when buying dive gear. Don't regret your scuba equipment purchases!
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This honest and impartial scuba diving regulator purchase guide will save you money. Avoid making costly mistakes when buying expensive dive gear.
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Deep diving risks are badly educated on many dive courses. This article is a comprehensive guide to the hazards of deeper recreational diving.
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Top-10 tips on how to best prepare for technical diving training Reduce the risk of failing technical diving training with these essential tips to prepare…
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Dive site details for the USS New York wreck in Subic Bay, Philippines. History, dive details and video of this famous shipwreck for divers.
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Top 5 Sidemount Adapter Systems Sidemount adapter systems are one solution for diving sidemount if you already own a backmount wing, but don’t want to…
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SEAC Sidemount BCD The SEAC Sidemount BCD KS01 looks like a warm-water configuration. With ~20 lbs of buoyancy, it is in competition with the Hollis…
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Defining grades of wreck diving restrictions. How to assess the severity of restrictions when planning your dives in backmount and sidemount
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Some Options for Homemade / DIY Sidemount Rigs When I was a new sidemount diver there weren’t many commercially sold rigs available. As a result,…
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The Tabby Aircraft Wreck – Subic Bay Diving the Showa Nakajima L2D Tabby One of five aircraft wrecks in Subic Bay, I identified the Tabby…
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I occasionally hear sidemount divers report having problems reaching the XDeep Stealth dump valve. There are some simple solutions to this problem...
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L2D Tabby Aircraft Wreck Photos Subic Bay, Philippines Here are some L2D Tabby aircraft wreck photos taken on 45m technical dives in Subic Bay. For…
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How to develop your scuba diving trim and become a more comfortable, confident & competent diver. Follow these simple tips for swift progress!
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Everything you need to know about sidemount, wreck and cave diving helmets; including how to make your own DIY helmet.
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This is Richard Pyle's account of suffering decompression sickness; the mistakes he made, the treatment he recieved and the long journey to recovery. Every diver should read this, because DCS isn't an urban myth.
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How to make a DIY sidemount helmet for wreck and cave diving. An illustrated and comprehensive guide.
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My shortlist of the best 'must read' books for advanced and technical divers. Lot's of knowledge and some good stories
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There are just a few simple steps to the methodical setup of a sidemount harness system. Knowing those right steps can save you lots of time and frustration.

What are the strengths and weaknesses of the scuba diving training industry and how can that effect both dive profesionals and divers? The aim of this article is to take a look at the modern scuba diving training industry and hopefully induce some debate on what's right, and bad.
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The greatest variation between divers is the individual perception of susceptibility to narcosis. This is the person's awareness of when, or if, they are suffering a decline in mental cognizance due to elevated nitrogen partial pressure.
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Analysis of the individual and team psychological factors defining the fatal world depth record attempt by Guy Garman.
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Choosing the right set of sidemount fins is an important decision. They have a profound effect on diver trim and control. With that recommendation in mind, here is my pick of the top 5 warm-water sidemount fins.
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Divers use helium for three reasons. Breathing mixtures that contain helium are commonly referred to as "trimix". Trimix is a mixture that contains three different gasses; helium, oxygen and nitrogen. It is commonly used by technical divers, although recreational trimix courses are becoming more popular over recent years.

What is the best wreck diving course? What to know so that you get the best quality wreck diving course In this article I will…
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Scuba Q&A: Do You Need A Diving Certification? Q. Does someone need a certification for scuba diving? Answer: You need to be aware of certain…
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The question of using less air when scuba diving is one of the most pressing issues that a majority of newly qualified divers ask. The best way to use less air while scuba diving is to address the root cause of higher air consumption, not to focus on the symptoms.
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Why Do I Feel Tired After Diving? The simple answer is; you shouldn’t feel tired after diving. If you find yourself inexplicably fatigued, malaised or sleepy…
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Scuba Q&A: What Is Your Reason For Technical Diving? Q. What is your reason for doing technical diving? Answer: I look at it as “tools…
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There are three governing factors which determine how deep can you dive using air. Understanding those factors promotes safe gas selection.
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What is the biggest risk in technical diving? ..and how to avoid it! The biggest risk in technical diving is, quite simply, not having…

Philippines Underwater Archaeology, Shipwreck and Salvage Resources This is my resource link page for useful information on Philippines underwater archaeology, shipwreck resources and information about…
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Assessing critical learning points to help promote increased dive safety. In January 2020, Christine Gauci, a 35-year old technical diver tragically perished in a scuba diving accident in Malta.
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Early in 2017, I made a decision to cross-over my scuba diving instructor rating to RAID. What I liked about RAID was that they were aiming for quality, not quantity. That was reflected in their syllabus, as well as having stringent and measurable performance standards at every level.
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How To Set Goals For Your Technical Diving Development Don’t waste time and money when developing as a technical diver. Use this advice to create…