HP Hartmann added the topic Checking the Pressure Gauges to the Lesson Essential Dive Skills in the group Basic Side Mount Open Water Diver

HP Hartmann added the topic Showing Tank Pressures to the Lesson Reato in the group Basic Side Mount Open Water Diver

HP Hartmann added the topic Switching Regulators with both Hands (Safe Regulator Switch) to the Lesson Essential Dive Skills in the group Basic Side Mount Open Water Diver

HP Hartmann added the topic Switching Regulators with one Hand to the Lesson Essential Dive Skills in the group Basic Side Mount Open Water Diver

HP Hartmann added the topic Helicopter Turns to the Lesson Propulsion Techniques in the group Basic Side Mount Open Water Diver