What is the Best Watch Sized Diving Computer? | 2025
A comprehensive buying guide to the best watch sized diving computer in 2025. Explore the details & specifications to for the best informed decision!
Andy Davis Sidemount Technical Wreck Diving Blog
Articles for beginner to expert scuba divers
Andy Davis Sidemount Technical Wreck Diving Blog
Articles for beginner to expert scuba divers
scuba diving tips
Read MoreWhat is the Best Watch Sized Diving Computer? | 2025
Are You A Prestige Diver?
Let's take a look at diver motivations. It's easy to get side-tracked into superficial motivations. Who is the Prestigious Diver?
Ultimate Guide to Sidemount Cylinder Trim
Sidemount cylinder trim is a headache for many sidemount divers. This illustrated guide will help you diagnose the problem & find the solution
How To Find The Best Scuba Diving Course
Don't pay good money for bad training. Undertanding these factors will help you identify the best scuba diving courses available.
Streamlined Dive Gear: A Huge Diving Performance Boost
The benefits of streamlined dive gear and how to achieve it with your own scuba diving equipment. Small kit changes can have big effects.
How to Nail Perfect Weighting for Your Dive: An Ultimate Guide
How to perfect your scuba weighting. Get this right & your buoyancy control will be much easier. Advice not taught in Open Water courses
A Guide To Expert Scuba Diving Skill Development
A 'how to' guide for scuba diving skill development. A systematic tiered approach to ingraining fluent & intuitive dive proficiencies.
Using Your Hands Whilst Scuba Diving
Using your hands when scuba diving is inefficient for maneuvering. Learn how to break this habit and become a better scuba diver.
How to Judge Your Diving Ascent Rate Without a Dive Computer
Being able to judge your diving ascent rate is an invaluable safety skill if your computer or bottom timer fails. These tips show how!
The Physics of Diving – Scuba Gas Laws Theory
An explanation of the Scuba Gas Laws for Diving. Boyle's Law, Henry's Law, Charles Law, Dalton's Law, Oxygen Toxicity & Partial Pressures.
Changing to an AIR-2 Octopus AAS
What are the pros and cons to changing to an AIR-2 regulator inflator octopus (AAS) system? What needs to be considered? Best AIR-2 systems?
How To Overcome Fear of Mask Removal When Scuba Diving?
Learn how to overcome fear of mask removal when scuba diving with these expert tips. Improve your skills and confidence underwater.
Technical Diving Skills | Reaching Your Valves
This article, posted at DiveDIR, gives great advice on how to reach your valves when conducting valve shutdown procedures.
Advanced Wreck Diving: The Ultimate Guide
A comprehensive guide to advanced wreck diving techniques, equipment, skills and protocols. A must-read for wreck divers at all levels.
Muck Diving in Subic Bay, Philippines
Muck diving underwater photography in Subic Bay, Philippines. Experience the rare marine life to be found in this photographer's paradise!
Technical Diving Valve Shutdown Drill Explained
Follow these 21 methodical and simple steps to effectively drill the technical diving valve shutdown drill for increased safety & proficiency.
Recreational Diving Limits: Assessing The Grey Area Versus Technical Diving
Recreational diving limits become increasingly blurred with technical diving. Why are limits required & how do divers need to consider them?
A Guide to Modern Sidemount Diving
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.
Deep Diver Courses: What You Really Need To Know!
An honest appraisal of the training given on recreational Deep Diver courses versus the risks that exist on deeper dives.
The Best Ascent Speed for Scuba Diving
Learn the best ascent speed for scuba diving. Contrary to assumptions, slower is not always safer when it comes to diving ascent rate!
Pro Tips For Choosing The Best Scuba Diving BCD For Your Needs
Honest pro tips on how to buy the best scuba diving BCD for your needs. Learn about BCD features, functions, designs and suitability!
Scuba Diving Regulator Buyers Guide
This honest and impartial scuba diving regulator purchase guide will save you money. Avoid making costly mistakes when buying expensive dive gear.
Top-10 Tips: How To Prepare For Technical Diving Training
Technical diving training is HARD! Increase your chance of success with these top-10 tips on how to prepare for your tech diving course!
Showa L2D Tabby Aircraft Wreck | Subic Bay
The L2D Tabby aircraft wreck in Subic Bay. Dive site details, map, history and photos of the wonderful Tabby wreck in Subic Bay Philippines.
Choosing A Wreck Diving Instructor: How To Find Specialist Expertise!
Finding a legitimately expert specialist wreck diving instructor is critical for becoming a safe and proficient wreck diver. Choose wisely with this honest pro advice!
DIY Sidemount Helmet Instructions
How to make a DIY sidemount helmet for wreck and cave diving. An illustrated and comprehensive guide.
An Evaluation of the Modern Scuba Diving Training Industry
An evaluation of the modern scuba diving training industry, focusing on diver commitment demographics & expectation management.
Scuba Gas Planning: Gas Management For Divers
Learn scuba gas planning for your dives! A step-by-step guide to gas management for divers. Enhance your dive knowledge & safety underwater!
Avoid Costly Mistakes When Buying Dive Gear
Honest expert pro tips to help prevent costly mistakes when buying your dive gear. Don't regret your scuba equipment purchases!
Scuba Equipment Shopping: How To Buy The Best Dive Gear!
When scuba equipment shopping it's easy to waste money on disappointing or inappropriate dive gear. These honest pro tip helps avoid costly mistakes!
How To Choose The Best Wreck Diving Course?
Detailed guidance for choosing the best wreck diving course. Wreck diving can be dangerous; so it is important to choose expert instruction
The Changing Technical Diving Mindset: Issues in Technical Diving
Technical diver mindset: an analysis of change over two decades. Contemporary issues in technical diving and certification.
10 Tips To Horizontal Hover When Scuba Diving
The ability to horizontal hover when scuba diving is the benchmark of fundamental skills proficiency. These tips will help you master hovering
Sidemount Cylinder Boltsnaps | Gear Setup Tips
Sidemount cylinder boltsnaps may seem insignificant but are critical for cylinder trim. Choose the right boltsnap with this quick guide.
Does Nitrogen Narcosis Impairment Persist?
A new study on nitrogen narcosis challenges the long held presumption that nitrogen narcosis impairment dissipates immediately on ascent from depth.
Working as a Technical Diving Instructor
My thoughts on working as Technical Diving Instructor after two decades teaching tech, trimix & overhead diving as a full-time pro.
How To Build Your Own DIY Custom Sidemount Harness
It's pretty easy (and cheap!) to make a DIY custom sidemount harness for yourself. Sidemount diving tips and 'how to' advice.
The Scuba Diving Industry: Cost Versus Quality
Does the scuba diving industry actually empower the pursuit of quality?
Sidemount Skills: Problems With Fine Motor Movements
My thoughts on experiencing problems with sidemount skills performance; particularly fine motor movements.
7 Diving Buoyancy Tips That You Need To Know
Divers often struggle with their buoyancy. These essential tips are game-changing to set you on the right path for consistent improvement.
Nylon-Braided Regulator Hose Diving Emergency
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 neither of his regulators was delivering gas at depth. If you’d asked me previously whether…
The Importance of Deep Stops by Richard L. Pyle
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 the full version was subsequently published in Cave Diving Group Newsletter, 121:2-5. by Richard L.…
Compression Arthralgia | Deep Diving Maladies
An overview of compression arthralgia | Hyperbaric deep diving malady | Compression arthralgia causes, symptoms, treatment | By Andy Davis
Scuba Q and A: Diver Stress, Relationships and Comfort Zones
Scuba Q and A: QUESTION: I am a recreational diver and I dive mostly with my husband. Our relationship issues (bickering) caused me stress. Is this a factor I should consider when scuba diving? Andy’s Answer: [no_toc] I know of…
Oxygen Exposure Management for Scuba Divers
OXYGEN EXPOSURE MANAGEMENT by Richard D. Vann Oxygen metabolism is the primary energy source in higher life forms, but when oxygen enters the metabolic process prematurely, reactive oxygen species can form which interfere with normal function and cause convulsions or…
Decompression Theory Resources | Technical Scuba Diving
Decompression Theory – Links and Resources Here is my selection of educational articles and resources for further reading on scuba diving decompression theory… – Bubble Decompression Strategies by Eric Maiken – VPM Decompression Site by Eric Maiken – Confessions of a Mortal Diver by Richard Pyle…
A Review of the Human Factors in Diving Course
A Review of the Human Factors in Diving Course by Andy Davis I was recently given the opportunity to undertake the online Human Factors in Diving course. The online version of this course is self-contained, but also acts…
ANDI Ascent and Descent Procedures | Diving Techniques
The ANDI ascent & descent procedures explained. Increase safety & promote team-cohesion. Rec & tech protocols | Advanced Diving Techniques