Question: What is the difference between a Dive Guide and a Divemaster?  Both RSTC and ISO describe Open Water qualification as an “autonomous level” qualification. ‘Autonomous’ means that the qualified diver DOES NOT REQUIRE SUPERVISION relative to the level of their qualification. Consequently, it should be appropriate for a “Dive Guide” to accompany them purely […]

The post Scuba Q and A: The Difference Between a Divemaster and Dive Guide was written by Andy Davis.

Goal Setting for Technical Diving Training by  Andy Davis Technical diving is a serious endeavour, that requires a significant commitment in respect of money, time and effort.  For that reason, very few divers embark on technical diving training without having some sort of plan of what they wish to achieve in the long-term. Setting long-term […]

The post Goal Setting for Technical Diving Training was written by Andy Davis.

Bungee Secured Finger Spool Here’s my approach to configuring a very secure, yet easy to deploy finger spool. It works well for overhead environment safety spool use, and is quick and intuitive to deploy, even in zero visibility. Originally posted 2018-11-05 06:10:15.

The post Bungee Secured Finger Spool was written by Andy Davis.

The Physics of Diving – Scuba Gas Laws A concise explanation of the critical scuba gas laws for divers by Andy Davis Scuba diving is all about getting gas into your body while you are underwater. What complicates scuba diving is the way gasses behaves at depth, under pressure, in your body and in your […]

The post The Physics of Diving – Scuba Gas Laws Theory was written by Andy Davis.

Technical Diving Formulas The scanned page below highlights key formulas for technical diving.  This is useful as a review, or for technical diving students preparing for courses. Originally posted 2018-03-07 23:56:54.

The post Technical Diving Formulas was written by Andy Davis.

Scuba Q and A Question:   I was taught that “recreational divers plan all dives to be no stop dives” and also that most agencies consider 40m /130 feet as the maximum depth for recreational deep diving.  That seems inconsistent when my dive computer allows me to dive below 40m/130 feet and still stay inside no-stop limits. […]

The post Scuba Q and A: Deep Diving Below Recreational Agency Depth Limits was written by Andy Davis.