Learn from the number one moving water PSD Instructor in the U.S. and Canada. What is the physical force and speed of moving water and what are the corresponding ramifications? Learn well-proven procedures and techniques to safely dive in water up to 3 knots and how to be prepared for what can go wrong. How do you decide if the water is too fast in which to operate? Build redundant safety systems into dive procedures to make sure everyone can go home.