technical diving

Hydrogen in the Mix

In the early part of the 20th century, American physicist and chemist, Professor Elihu Thomson – the person credited with putting the eventual use of helium on the diving menu – had originally proposed the use of hydrogen as a… Read More ›

Colour Me Blue

Suffering for one’s art is a cross that all of us underwater photographers learn to bear.  I say “us”, because while my talents in this field have never been properly recognised, I’ve more than paid my dues in terms of… Read More ›

The Search for X5

Developed by the Royal Navy during WWII, the X-craft were midget submarines manned by a crew of four – one of whom was the designated diver.  Because of their limited range, the smaller X-Craft would be towed by a ‘mother’… Read More ›

The Fundamentals Of Better Diving

Hopefully everybody who dives has—at some point in their training—pored over the pages of a “How To” manual in an attempt to better understand the underlying physics and physiology governing their safe enjoyment of diving, and the techniques that, when… Read More ›

‘Under Pressure’

Encouraged by the comments of a former U.S. President, Theodore Roosevelt, who wrote that,   “Nothing in the world is worth having or worth doing unless it means effort, pain, difficulty…”, I have no hesitation in stating that Gareth Lock’s book,… Read More ›