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CONTENTS
          - SUMMARY 
          
-  1.INTRODUCTION 
          
   - 1.1 Objectives of study 
          
 - 2. THEORY 
          
- 3. EXPERIMENTAL PROCEDURES 
          
  - 3.1 Environmental conditions 
          
- 3.2 Location devices 
          
- 3.3 Observation platforms 
          
- 3.4 Trial area 
          
- 3.5 Device deployment 
          
- 3.6 Deployment and relocation strategies 
          
- 3.7 Location device questionnaires 
          
       - 4. RESULTS 
          
 - 4.1 Deployment methods 
          
- 4.2 Environmental conditions 
          
- 4.3 Data collation 
          
- 4.4 Relocation distances 
          
- 4.5 Questionnaires 
          
     - 5. DISCUSSION 
          
- 6. CONCLUSIONS 
          
- 7. RECOMMENDATIONS  
          
   - 7.1 Folding flags 
          
- 7.2 Flashing strobes 
          
- 7.3 Torches 
          
- 7.4 Decompression markers 
          
- 7.5 Paired buoys 
          
- 7.6 Pyrotechnics 
          
- 7.7 Marker dye 
          
- 7.8 Combined devices 
          
- 7.9 Observers 
          
- 7.10 Observation platforms 
          
          - APPENDICES 
          
- ACKNOWLEDGEMENTS 
          
- REPORT PRODUCTION  
          
- REFERENCES  
        
     
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