PADI OWSD (Step 2): Confined Water Training | Open Water Scuba Diver CertificationConfined Water Training is Step 2 of earning your PADI Open Water Scuba Diver Certification. This class takes place with your instructor in a confined water environment using scuba gear in a pool (or pool like environment) until you're comfortable. PADI confined water training is a required step in obtaining your Open Water Scuba Diver certification to help you build confidence in your new abilities before making four dives in open water. STEP 1: PADI