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227 Visibility .................................................................. 180 Water conditions .................................................... 180 Water temperature.................................................. 181 Waves and surf ....................................................... 182 Wrecks ..................................................................... 190 Equalization methods ......................................... 107, 109 Equipment Accessories ................................................................ 42 Additional instruments ............................................ 31 Alternate air sources ................................................. 26 Assembling scuba unit ............................................. 55 Attachment devices ................................................... 42 Backpacks ................................................................. 24 Basic personal .......................................................... 15 Booties ...................................................................... 17 Buoyancy compensators .......................................... 32 Buying ...................................................................... 14 Checking ................................................................... 61 Contingency scuba ................................................... 27 Cylinders ................................................................... 20 Difficulties .............................................................. 163 Dive flags .................................................................. 43 Dive floats ................................................................. 43 Diving instruments .................................................. 31 Diving suits ............................................................... 37 Donning.................................................................... 49 Fins ........................................................................... 18 First aid kits .............................................................. 44 Flotation device ........................................................ 19 Gauges ...................................................................... 27 Gear bags .................................................................. 43 Gloves........................................................................ 19 Hoods ........................................................................ 40 Knives........................................................................ 42 Logbooks ................................................................... 44 Maintenance of basic ............................................... 19 Masks ........................................................................ 15 Preparing for use ...................................................... 48 Regulators ................................................................ 25 Removing and replacing scuba unit in water ......................................................... 85 Snorkels .................................................................... 16 INDEX Surface flotation ....................................................... 44 Testing scuba unit .................................................... 57 Thermal protection .................................................. 37 Weights and weight belts ................................... 34, 36 Etiquette, diver ............................................................. 210 Eustachian tube, pressure on ears and ....................... 107 Evaporation, overheating and..................................... 161 Exertion, air consumption and ................................... 105 Exhaling when regulator is out of mouth underwater ............................................... 69 Exits.................................................. See Entries and exits F Feet first dive .................................................................. 53 Fins Figure four position ................................................. 52 Full-foot .................................................................... 18 Heel-strap.................................................................. 18 Kicking with ............................................................. 52 Purpose ..................................................................... 18 Selection ................................................................... 18 Types ......................................................................... 18 Using ......................................................................... 50 First aid ........................................................................ 169 First aid kits ........................................................... 44, 214 Fish, touching ................................................................ 19 Fitness .............................................................................. 9 Flags Alpha ......................................................................... 43 Divers down ...................................................... 43, 202 Recall ........................................................................ 84 Sport diver ................................................................ 43 U.S. dive flag ............................................................ 43 Flags and floats .............................................................. 43 Float plan ..................................................................... 191 Flooded mask, breathing with ...................................... 69 Flotation device..................................See Snorkeling vest Flying after diving ....................................................... 139 Free diving ................................................................. 5, 54 Free-flowing regulator ................................................... 70 Fresh water pressure .................................................... 101 INDEX


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