The Evolution of Dive Planning

For many recreational divers, dive planning has become a lost art, but technical divers still place a large emphasis on the value of dive planning. Despite this, the methods of dive planning have changed to take advantage of changes in technology and equipment. In this article, we will look at how dive planning for technical divers has evolved and how we can best make use of modern technology while still maintaining safety.

Permanent Change: When Have We Learnt?

In a previous article, I discussed some of the various definitions of learning, and focused on the following definition: Learning is a permanent, observable change in behaviour. Specifically, the article explored the second part of the definition and the learning outcomes that can be used to pin down the observable change in behaviour, which we are looking for.

Parallels in Psychological Factors in Technical Diving and the Olympics

Achieving the Olympic dream is often described as the culmination of four years or more of hard work, sacrifice, commitment and dedication. To be an Olympian, there will be three components that must be present in each competitor before the dream can be achieved: talent, physical potential and psychological potential.

Poseidon's new Solid State Sensor (SSS)
Poseidon's new Solid State Sensor (SSS)

Poseidon Announces "Game-changing" 'Solid State Oxygen Sensor'

In early 1968 John Kanwisher and Walter Stark met by chance. They soon learned that each man had been considering the feasibility of a mixed gas closed circuit rebreather (CCRB) using electronic sensors to control the Partial Pressure of Oxygen (ppO2). They collaborated and the result was the Electrolung.

Just Culture

Debriefing allows lessons to be learned—successes and failures. Photo by Gareth Lock.

A diver had an oxygen toxicity seizure because an incorrect gas was filled in a cylinder by a dive centre. A baby died because the wrong dose of medication was injected. Who is to blame for the error and how do we try to make sure that these types of incidents aren’t repeated?


Recreational divers also need to consider their hose routings, many of which may have been learned or become a habit, good or bad, over many years of just taking such things for granted.

Since the introduction of Scuba diving in the mid 1950s, one of the most hotly debated subjects in the world of technical diving is that regarding the best type of gear configuration. Over the years, many experienced divers, instructors, and training agencies, have all claimed that their method and style of kit configuration is the best.