Hand signs - counting with ONE hand
Essential Underwater Hand Signal Guide: One-Hand Communication System
Importance of Underwater Communication
Critical Safety Applications
- Emergency notifications
- Gas level reporting
- Directional indicators
- Status checks
- Equipment issues
Communication Challenges
- No verbal options
- Limited visibility
- Equipment restrictions
- Distance factors
One-Hand Numbering System
Numbers 1-5 Technique
- Palm faces recipient
- Fingers point upward
- Clear finger separation
- Natural hand position
- Maximum visibility stance
Numbers 6-10 Method
- Palm faces signaler
- Fingers horizontal
- Consistent orientation
- Clear digit display
- Efficient communication
Visibility Enhancement Tips
Background Considerations
- High contrast positioning
- Light conditions awareness
- Avoid busy backgrounds
- Consider depth effects
Signal Optimization
- Deliberate movements
- Clear hand positioning
- Appropriate distance
- Confirm understanding
Practical Applications
Common Usage Scenarios
- Gas checks
- Depth reporting
- Time indicators
- Temperature signals
- Distance measurements
Special Considerations
- Camera handling
- Buddy contact
- Equipment management
- Emergency situations
Note: Clear underwater communication is essential for dive safety and enjoyment.
All RAID training centers & professionals will be able to offer you help and advice on hand signals. It is good to be aware that some hand signals can be regional, so it is always good to confirm their meanings before the dive. If you can’t find a dive center in your area, let us know.