What skills are required during Deep Diver Training Dive 2, 3 and 4?
Students must complete the skills below during training dives 2, 3 and 4. They should be spread across the three dives:
- Controlled Descent: Descend in a controlled way using a visual reference (reef below, sloping bottom, etc.) and establish neutral buoyancy using their BCD or dry suit
- Advanced Navigation Exercises: Using a compass, perform more complex navigation exercises like square or triangle patterns.
- Simulated Emergency Response: Practice responding to simulated emergencies like out-of-air situations or regulator failures.
- Deeper Depth Exploration: Explore deeper, around 25 to 30 meters, to experience different physiological effects and practice skills at these depths.
- Buddy Communication: Enhance communication skills using hand signals and other non-verbal methods with their buddy.
- Effects of Pressure: Bring a flexible item to demonstrate the effects of pressure at a greater depth. Observe how it compresses as you descend.
- Gas Management: Introduce and practice more advanced gas management techniques, including planning for and monitoring gas reserves. Have student divers check their pressure gauges regularly. They should be able to signal their current gas supply without looking at their gauge, and their accuracy should be within 20 bars.
- Set up a redundant gas supply. This can be a drop tank, secure pony bottle or any other redundant emergency gas supply.
- Emergency Decompression Simulation: Simulate an emergency decompression stop at 5m for 8 minutes. Student divers should breathe from a drop tank, secure pony bony bottle or any other redundant emergency gas supply.
- Environmental Awareness: Emphasize the importance of maintaining situational awareness, including monitoring dive conditions.
- Conduct a narcosis test: Compare the completion time of a task at the surface and depth.
- Conservation and Impact: Focus on minimal impact diving, reinforcing the importance of conservation practices in deep diving.
- Gas Management: Introduce and practice more advanced gas management techniques, including calculating and applying SAC rate in dive planning.
- Compare computers and/or depth gauges at depth.
- Deploy DSMB.
- Perform a slow ascent: Ascend no faster than 9 metres per minute.
- Set up an emergency oxygen unit.
What are the recommended depth ranges for Deep Diver Training Dives?
This recommended depth range for each Deep Diver training dive is:
- Dive 1: 20 to 25 metres
- Dive 2: 25 to 30 metres
- Dive 3: 30 to 35 metres
- Dive 4: 35 to 40 metres