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Tag Archive: techniques


Sidemount Technical Wreck Diving Subic Bay Philippines

Choosing and Using A Redundant Air Source By Andy Davis Pony cylinders are a popular choice amongst divers who seek a redundant form of air supply as a contingency for Out-Of-Air (OOA) emergencies when scuba diving. There is a lot of debate about when, or if, a recreational open-water diver should need a redundant air […]

Sidemount Technical Wreck Diving Subic Bay Philippines

Pony Cylinders and Redundant Air Sources for Wreck Diving by Andy Davis Recreational wreck divers often question whether they need to carry a redundant source of air when conducting specialist wreck diving activities.  Most agencies and instructors will generally recommend the use of redundant air sources to be a prudent measure for wreck divers.  However, […]

scuba-tips-advice-how-to-professional

Scuba Q and A: How To Ascend When Diving? Q. How should a scuba diver ascend when scuba diving? Answer: Novice scuba divers are taught to ascend very slowly from depth – which is an appropriately simplistic ‘rule’ that helps them avoid a too fast ascent which could otherwise cause decompression sickness. However, there is […]

technical diving subic bay philipines

Ten Tips to Attain a Better Horizontal Hover – Scuba Diving Techniques by Andy Davis Scuba diving techniques to improve your comfort and capability underwater. In this article, I list ten simple techniques that will allow you to develop a better horizontal hover whilst scuba diving. Get Your Weighting Right Fine-tune & confirm your max weighting […]

advanced wreck diving course subic bay

ADVANCED WRECK DIVING – COURSE NOTES by Andy Davis Disclaimer:   These notes accompany a professionally supervised advanced wreck diving workshop, aimed at developing specialist skills for qualified wreck divers.  This information is not a substitute for gaining proper experience under qualified direction.  Wreck penetration is a very hazardous scuba diving activity.  Divers should not […]

Wreck Diving Subic Bay

Scuba Buoyancy Masterclass Series #1 Scuba Buoyancy Control for Divers by Andy Davis Effective scuba buoyancy control is, without doubt, the most important attribute that a diver needs to develop. Control of your buoyancy has a direct impact on air consumption, comfort, relaxation and the control of descents and ascents – which have direct safety […]

technical diving subic bay philipines

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 fluidity underwater.  A major obstacle to these goals is using your hands for control and/or propulsion I think that most novice divers have an instinctive tendency to try and ‘swim’ […]

ANDI Techniques of Wreck Diving Course Philippines

ANDI Techniques of Wreck Diving Course Subic Bay, Philippines  Some photos from the first dive of the ANDI Techniques of Wreck Diving course, run by Andy Davis in Subic Bay, Philippines on the 7th Sept 2013.   The course is ANDI Level 2 (advanced recreational) and is very similar in scope and protocols to the […]

Defining Wreck Diving Restrictions by Andy Davis Very few diving agencies go into detail about wreck diving restrictions. Those that do, tend to limit their definition to either ‘not restricted’ or ‘restricted’. That definition hinges upon whether two divers could pass through simultaneously when sharing gas.  The intention of this is to prevent recreational divers […]

Andy-Davis-Technical-Diving-Courses Philippines

Teaser Pics: ANDI Advanced Sidemount Course I am currently editing videos and preparing a course report for the A.N.D.I Advanced Sidemount course, that finished today in Subic Bay.  The course was taught by Bruce Konefe (ANDI I.T.D #15). Here are some photos, captured from the video footage: The A,N.D.I. Advanced Sidemount course is focused towards […]

Wreck Diving – Guidelines Technique Tutorial Videos These two videos from Mark Blackwood provide a good insight into effective guideline techniques for guideline laying in wrecks. More details of guideline techniques for wreck diving can be found in my Advanced Wreck Diving techniques supplement.  For details about my specialist wreck diving courses, please see: PADI […]

Sidemount Technical Wreck Diving Subic Bay Philippines

ANDI Ascent & Descent Procedures – Open Circuit Diving During all ANDI training courses, students are taught to follow a set system of procedures for ascent and descent.  These procedures include a number of stops, to enable team cohesion, increase safety and conservative off-gassing. You don’t need to be an ANDI trained diver to appreciate […]

instinctive drowning response padi rescue diver scuba

Instinctive Drowning Response – Vital Knowledge for Scuba Divers and Swimmers by Andy Davis All divers should be aware of Instinctive Drowning Response.  Those scuba instructors (and agencies!) responsible for teaching rescue diver courses should make a priority to update their syllabus and materials in recognition of the ‘real-world’ signs of a drowning victim. Several […]