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

Advanced Open Water Diver

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• Reasons for night diving include (check all that apply) 1. natural curiosity 2. to observe nocturnal animal life 3. a new look at old sites 1, 2, 3
• One night diving activity is sightseeing and watching nocturnal creatures - True - False True
• Which of the following have some considerations for night diving (check all that apply): 1. alternate air source 2. weight belt 3. BCD inflator 4. mask 1, 3
• Diving with new or unfamiliar equipment at night - is a good idea because it speeds your adaption to it - is generally not recommended is generally not recommended
• It's important to carry two underwater lights - you want to have a backup in case of a light failure - you often want to use two lights at once you want to have a backup in case of a light failure
• Which of the following are features to look for in a dive light (check all that apply) 1. fresh batteries 2. reliable switch 3. lanyard or clip 4. rugged case 1, 2, 3, 4
• Rechargeable batteries - cost more than disposables but are cheaper in the long run - are not considered reliable enough for dive lights cost more than disposables but are cheaper in the long run
• You should not turn some dive lights on out of the water because - they will overheat and be damaged - they require water to create an electrical contact - they have the wrong color temperature they will overheat and be damaged
• One use of marker lights is to mark your location and your buddy's location - True - False True
• After use, a dive light should be (check all that apply): 1. be rinsed and soaked in fresh water 2. opened to replace / recharge batteries and to clean o-rings 3. rinsed internally with alcohol 1, 2
• Basic care for a flooded dive light includes (check all that apply) 1. turning it off immediately 2. rinsing it internally and externally with water 3. having it serviced before using it again 1, 2, 3
• For maximum adventure, it's best to choose a dive site you've never seen before when night diving - True - False False
• Environmental conditions to avoid when night diving include (check all that apply) 1. heavy surf 2. surge 3. thermoclines 4. overhead environments 1, 2, 4
• One reason to night dive from a boat is that it often simplifies entries and exits - True - False True
• Which of the following are generally recommended for night diving (check all that apply) 1. arrive before dark to set up your gear 2. skip dinner 3. dive with a familiar buddy 4. bring a non diver 1, 3, 4
• If a problem occurs during a night dive - trust your instincts and act accordingly - stop, think and then act stop, think and then act
• If your light fails during a night dive you should - borrow your buddy's light and abort the dive - switch to your backup light and continue the dive - switch to your backup light and abort the dive switch to your backup light and abort the dive
• If you become disoriented during a night dive and cannot reorient by checking your compass and natural references you should - swim in a straight line until you find something familiar - surface with your buddy, conditions allowing, to reorient surface with your buddy, conditions allowing, to reorient yourself at the surface
• When entering the water from a boat or shore, generally your light should be - off to prevent cracking in the cooler water - on to avoid loss and to help you check the entry area on to avoid loss and to help you check the entry area
• The easiest way to relocate an offshore site is to follow a compass heading established during the day - True - False True
• To help avoid disorientation during descents and ascents a ___ is recommended - compass - reference line - backup light reference line
• Since you can't see them in the dark, it's recommended that you do not use hand signals on a nicht dive. - True - False False
• The best way to avoid contact with bottom dwelling organisms on a night dive is to - kick and flail to scare them out of your path - maintain neutral buoyancy and watch where you put your hands, feet and knees maintain neutral buoyancy and watch where you put your hands, feet and knees
• To navigate more effectively at night (check all that apply) 1. take a compass heading to the boat or shore before you descend 2. use simple navigation patterns 3. stay close to your exit area / reference line 1, 2, 3

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