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Sections and topics include:
- Dive Physics – heat, light and sound in water, water pressure, buoyancy and gases underwater
- Physiology – circulatory and respiratory systems, responses to nitrogen, thermal change, and pressure changes on body air spaces
- Equipment – scuba systems, cylinders, valves, regulators, gauges and dive computers
- Dive Skills – buoyancy control, problem management and emergency first aid, navigation, search and recovery, communications, night and altitude diving skills
- Environment – physical oceanography, current, waves, tides, aquatic life and responsible diving practices
- Recreational Dive Planner (RDP) – decompression models, dive tables, dive computer use and special rules, recommendations and considerations