Learn Why Checklists Matter in Diving
Scuba diving requires attention to detail, situational awareness, and disciplined procedures. A well-structured checklist significantly reduces errors, enhances safety, and improves overall dive experiences.
The Role of Human Factors in Diving Errors
I was introduced to checklists in diving when I read Gareth Lock's book Under Pressure - Diving Deeper with Human Factors. You can explore his blog here and here. Checklists reduce errors, prevent cognitive overload, and mitigate normalization of deviance in diving.
Benefits of Using a Dive Checklist
- Consistency: Ensures no critical step is overlooked.
- Reduced Cognitive Load: Frees up mental resources.
- Emergency Preparedness: Reinforces response procedures.
- Buddy Communication: Creates a shared pre-dive process.
- Increased Confidence: Provides peace of mind before the dive.
Printed Checklist Best Practices
- Keep sections concise: 5-8 lines with no more than 5-8 words per line.
- Use a readable font size (at least 0.10in / 2.5mm).
- Utilize simple prompts instead of detailed instructions.
- Organize into logical sections for efficiency.
- Allow time gaps between checklist steps.
- If interrupted, restart the section before continuing.
Common Mistakes When Using Checklists
- Skipping steps due to overconfidence.
- Rushing through without verifying items.
- Using checklists inconsistently, leading to missed items.
- Failing to update checklists as gear or procedures change.
My Personal Dive Checklists
My Pre-Dive Checklist
Developed over 30 dives, my pre-dive checklist evolved naturally, refining the order of steps based on ease of use. It is laminated on a half-sheet (8x11, 14pt font) for durability and readability.
My Final Checklist
This checklist is minimal, designed for critical last-minute confirmations before entering the water. It prevents overlooked errors, particularly ensuring my tank valve is properly set—this check is done before stepping off a boat or shore entry.
Download My Pre-Dive Checklists (PDF)
My Packing List
Packing checklists prevent forgotten gear, a mistake too many divers make. I print one for every trip, checking off items as they are packed. I’m currently testing an iPad version—watch for a future blog post.
Download My Packing Lists (PDF)
Final Thoughts
Checklists are a sign of thoughtful, responsible diving—not inexperience. They ensure thorough preparation, reduce errors, and make every dive safer and more enjoyable.