Open Water Dive 4 Skills

The maximum depth for open water dive 4 is 18 meters/60 feet. For juniors, the maximum depth is 15 meters/50 feet.
This is what you will do during dive 4.
- Assemble your equipment, and check the assembly with your buddy.
- Listen to and participate in the dive planning and briefings. Review hand signals.
- Gear up and perform the pre-dive safety checks with your buddy.
- Enter the water in the manner discussed in the briefing.
- Check your buoyancy at the surface.
- Perform an S-Drill, and monitor your instruments.
- Complete a controlled descent without a reference line to the maximum depth for your course.
- Without touching the bottom, make sure you achieve neutral buoyancy at an agreed depth.
- Be prepared for your instructor to use hand signals and/or signs to simulate a random problem at any time. Practice failure scenarios. Your response will be to take the correct course of action for the problem presented, which could be one of the following:
- Instruments not working
- Feeling uncomfortable/unwell
- Being low on gas
- Being out of gas
- Demonstrate swimming while trim. Under the direct supervision of your instructor, you will swim in a horizontal position while finning correctly.
- Check for positive buoyancy on the surface.
- Complete surface market buoy (SMB) deployment on the surface.
- Exit the water in the manner discussed in the pre-dive briefing.
- Complete post-dive equipment care.
- Listen to and participate in the debriefing.
- Use a PDC to see new NDL, or calculate the end-pressure group with tables.
- Calculate SAC and RMV.
- Log the dive online.