Tauchen (Fach) / Advanced Open Water Diver - Deep Diving (Lektion)

Advanced Open Water Diver

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• Activities that you might enjoy while deep diving include (check all that apply) 1. wreck diving 2. drift diving 3. digital underwater photography 4. recovering lost objects (search and recovery) 1, 2, 3, 4
• Deep diving for the thrill of it without following appropriate procedure is - an appropriate deep dive objective - an inappropriate deep dive objective an inappropriate deep dive objective
• The dive community defines a recreational deep dive as - deeper than 18 metres / 60 feet to 40 metres / 130 feet - deeper than 30 metres / 100 feet to 40 metres / 130 feet - deeper than 40 metres / 130 feet to 55 metres / 180 feet deeper than 18 metres / 60 feet to 40 metres / 130 feet
• The reasons 30 metres / 100 feet is considered an "optimal" depth limit for recreational diving include (check all that apply) 1. short no decompression limits below 30 metres / 100 feet 2. hazardous deep-water marine life 3. oxygen toxicity 1, 4
• In setting a personalized depth limit for a dive, if you've been to a certain depth before, you can dive to the same depth in all other environments - True - False False
• One of the considerations in determining if your equipment is appropriate for deep diving is whether it's in good working order and serviced as required the manufacturer - True - False True
• The special equipment for deep diving includes (check all that apply) 1. emergency breathing equipment 2. diver computer 3. spare weights 4. emergency oxygen 1, 3, 4
• A surface support station - combines emergency oxygen and first aid equipment with a small boat - combines the reference line, emergency breathing equipment and spare weights - is only necessary for dives deeper than 30 metres / 100 feet combines the reference line, emergency breathing equipment and spare weights
• It's acceptable for two divers to share a single computer on a dive - True - False False
• Techniques for maintaining buddy contact on a deep dive include (check all that appy) 1. making feet-up descends together 2. swimming side-by-side just above the bottom 3. using a buddy line in poor visibility 2, 3
• How do you weight yourself for a deep dive? - the same as for a shallower dive in the same equipment - slightly heavy for an effortless descent - slightly underweight so you don't have to ditch weights at the bottom the same as for a shallower dive in the same equipment
• A feet-up descent is important because it allows you to spot the bottom more quickly as you descend - True - False False
• A technique for slowing or stopping a descent or an ascent on a reference line with your hands occupied is - snuggling your weight belt around the reference line - locking the line in your elbow locking the line in your elbow
• When descending or ascending without a reference, stay in a head-up position, keep your back to your buddy, watch your gauges and adjust your buoyancy frequently - True - False False
• Two techniques for accurately estimating an 18 metres / 60 feet per minute ascent rate are to time your rate with your depth gauge and timer and to - use a computer with an audible or visual "speedometer" - ascend no faster than your largest bu use a computer with an audible or visual "speedometer"
• The technique for breathing on a deep dive is best described as - deep and slow to avoid over-breathing the regulator - shallow and rapid to minimize nitrogen retention deep and slow to avoid over-breathing the regulator
• You can avoid low-on-air and out-of-air situations by (check all that apply) 1. monitoring your SPG frequently 2. avoiding overexertion to conserve air 3. ending the dive with ample reserve 1, 2, 3
• You should avoid stirring up the bottom by - descending feet first - avoiding fin movement near the bottom avoiding fin movement near the bottom
• The techniques for making a safety / emergency decompression stop, with or without a reference line, call for a head-up position - True - False True
• If you discover you accidentally omitted an emergency decompression stop, you should - re-enter the water and make a stop - remain clam, make no more dives, monitor yourself for decompression illness symptoms and breathe 100 percent oxygen if a remain clam, make no more dives, monitor yourself for decompression illness symptoms and breathe 100 percent oxygen if available
• Guidelines for wall diving include (check all that apply) 1. avoiding touching the wall 2. staying well away from the wall in midwater 3. watching your depth closely 1, 3
• The depth range where narcosis is generally felt by most divers is - 12 metres / 40 feet to 18 metres / 60 feet - 24 metres / 80 feet to 30 metres / 100 feet - 30 metres / 100 feet to 40 metres / 140 feet 24 metres / 80 feet to 30 metres / 100 feet
• Symptoms / signs of narcosis include (check all that apply) 1. limb and joint pain 2. impaired attention to safety 3. short-term memory loss 4. inappropriate behaviour 2, 3, 4
• Deep diving inexperience is one of the factors that can make narcosis more likely - True - False True
• You treat narcosis by - stopping all activity and relaxing - ascending until the symptoms subside ascending until the symptoms subside
• You prevent narcosis by - staying at shallower depths - pay close attention to your computer or tables staying at shallower depths
• The primary reason divers get decompression illness is diver error - True - False True
• Which of the following help you avoid decompression illness (check all that apply) 1. avoid diving to the limits of any computer or dive tables 2. always breathe continuously when using scuba 3. use your dive computer and / or RDP correctly a 1, 2, 3, 4
• Factors thought to predispose a diver to decompression illness include (check all that apply) 1. age 2. injuries and illnes 3. diving in salt water versus fresh water 4. inactivity during a dive 1, 2
• The signs and symptoms of decompression illness include (check all that apply) 1. limp pain 2. unconsciousness 3. lack of concern for safety 4. numbness, tingling and paralysis 1, 2, 4
• The two most important steps in handling a case of suspected decompression illness are to provide CPR and rescue breaths (if needed) and oxygen, and to arrange for the patient to reach emergency medical care - True - False True
• You would have a diver suspected of having decompression illness reenter the water for recompression only if you think it will take more than two hours to reach emergency medical care - True - False False

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