7CHAPTER 9CHAPTER 8CHAPTER IX Table of Contents Table of Contents Rescue Techniques ..............................................184 Detecting Diving Problems ..............................184 Rescue Preparation ..........................................185 Entry and Approach .........................................185 Assists .................................................................186 Recovering a Submerged Victim .....................186 In-Water Artificial Respiration ........................186 Resuscitation .....................................................187 Oxygen First Aid for Scuba Divers ...................188 Equipment Removal .........................................188 Removing the Victim from the Water .............188 Accident Management ......................................188 Summary ..............................................................189 For Further Reading ............................................190 Navigation for Divers 192 Learning Goals .....................................................194 Navigational Equipment for Divers ....................194 Diving Compasses .............................................194 Measuring Distance Underwater .....................196 Means of Navigation ............................................197 Natural Navigation ...........................................197 Compass Navigation .........................................199 Combining Navigational Techniques .................200 Navigational Problems ........................................201 Use of Charts ........................................................201 Advanced Underwater Navigational Equipment ..... 202 Summary ........................................................................ 202 For Further Reading ..................................................... 202 Limited Visibility and Night Diving 204 Learning Goals .....................................................206 Factors Determining Water Visibility .................206 Techniques for Low Visibility Diving ..................207 Buddy Diving ....................................................207 Buddy Line ........................................................208 Tether Lines ......................................................208 Diving Lights .....................................................209 Orientation ........................................................209 How to Find Your Way in Limited Visibility ....... 210 Night Diving .........................................................210 The Preparations ..............................................211 Keeping Track of Where You Are ....................211 Handling Equipment ........................................211 Equipment ............................................................211 Dive Lights ........................................................212 Battery Selection ...............................................212 Dive Light Maintenance ...................................213 Chemical Glow Sticks .......................................213 Strobe Lights .....................................................213 Surface Lights ...................................................213 The Night Dive ..................................................214 When to Terminate a Night Dive .....................214 Potential Hazards of Night Diving ..................215 Summary ..............................................................215 For Further Reading ............................................215 Search and Light Salvage 216 Learning Goals .....................................................218 Organization.........................................................218 Personnel...........................................................218 Defining a Search Area ....................................218 Sp ecial Equipment for Search and Light Salvage ............................218 Risk Factors ..........................................................219 Entanglement ....................................................219 Physical Injury ..................................................219 Diver Separation ...............................................219 Loss of Control in Current ................................219 Loss of Ascent Control ......................................219 Risk-Benefit Assessment ..................................219 Laws and Regulations ......................................220 Search Procedures ............................................220 Search Patterns ....................................................220 The Contour Search ..........................................221 Compass-Controlled Patterns ..........................221 Circular Search .................................................222 Semicircular Search .........................................223 Straight Line Search Patterns ..........................223 Jackstay Search .................................................224 Light Salvage Procedures ....................................224 Requirements for Safe Light Salvage ..............225 Types of Lift Bags .............................................225 Controlling a Lift ..............................................225 English Lift Example ........................................226
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