SDI Open Water UPDATED Exam
Questions and CORRECT Answers
CH 2 : What is the most important rule in scuba diving? - CORRECT ANSWER - never
hold your breath
CH 4 : Describe from start to finish the steps to disassembling your scuba system - CORRECT
ANSWER - - remove accessories and weights
- decompress the system : turn the valve knob completely clockwise, decompress the second
gauges (purge button or auto inflator button to vent air remaining in the hoses)
- detach the LP hose from the inflator assembly by pulling the collar back on the quick
disconnect , unscrew the yoke knob until the first stage can slip off the top of the valve
- undo the straps and remove the BCD from the cylinder
- rinse off gear and fill and dump BCD
CH 5 : Describe what to do if you exceed the no-deco time registered on your computer -
CORRECT ANSWER - - ascend to the surface before you run out of air
- when surfaced , establish positive buoyancy and signal for emergency assistance
- advise the dive supervisor of your omitted decompression and begin first aid procedures for
decompression sickness
- breathe oxygen for at least 30 mins and watch for signs and symptoms of decompression
sickness for at least 24 hours
- seek immediate medical attention if any symptoms develop
- do not dive or fly or go to higher elevations for at least 24 hours
CH 5 : What elements should you and your buddy agree on before the dive? - CORRECT
ANSWER - - dive time
- maximum depth
- minimum cylinder pressure
- emergency procedures
, CH 5 : Define risk management - CORRECT ANSWER - - a means of preventing
problems and planning a response to any emergency that arises
- involves planning ahead , employing good diving practices and knowing what to do before an
emergency
CH 5 : Why should you avoid consuming drugs or alcohol prior to a dive? - CORRECT
ANSWER - it greatly increases the risk of decompression sickness in divers
CH 5 : What is the emergency procedure for suspected decompression sickness? - CORRECT
ANSWER - 1: move the afflicted diver out of danger
2: activate the Emergency Medial System (EMS)
3: monitor life support signs (pulse and respiration) and provide CPR if necessary
4: provide 100% oxygen via demand regulator if the diver is breathing
5: evacuation if necessary
CH 5 : What should you do if you become entangled underwater? - CORRECT
ANSWER - - relax, do not struggle to free yourself , moving around results in further
entanglement
- figure out how to untangle carefully or carefully use knife to cut the line away, cut away from
body and gear
CH 5 : Describe the procedure recommended for a safety stop - CORRECT ANSWER --
Should be conducted between 3 and 6 meters (10 and 20 feet) for three to five minutes before
coming up to the surface
- a safety stop is recommended on any dive up to 30 meters (100 feet)
- for dives over 30 meters (100 feet), a saftey stop is mandatory
CH 5 : When planning a repetitive dive, the ___________ dive should be made first -
CORRECT ANSWER - deepest
Questions and CORRECT Answers
CH 2 : What is the most important rule in scuba diving? - CORRECT ANSWER - never
hold your breath
CH 4 : Describe from start to finish the steps to disassembling your scuba system - CORRECT
ANSWER - - remove accessories and weights
- decompress the system : turn the valve knob completely clockwise, decompress the second
gauges (purge button or auto inflator button to vent air remaining in the hoses)
- detach the LP hose from the inflator assembly by pulling the collar back on the quick
disconnect , unscrew the yoke knob until the first stage can slip off the top of the valve
- undo the straps and remove the BCD from the cylinder
- rinse off gear and fill and dump BCD
CH 5 : Describe what to do if you exceed the no-deco time registered on your computer -
CORRECT ANSWER - - ascend to the surface before you run out of air
- when surfaced , establish positive buoyancy and signal for emergency assistance
- advise the dive supervisor of your omitted decompression and begin first aid procedures for
decompression sickness
- breathe oxygen for at least 30 mins and watch for signs and symptoms of decompression
sickness for at least 24 hours
- seek immediate medical attention if any symptoms develop
- do not dive or fly or go to higher elevations for at least 24 hours
CH 5 : What elements should you and your buddy agree on before the dive? - CORRECT
ANSWER - - dive time
- maximum depth
- minimum cylinder pressure
- emergency procedures
, CH 5 : Define risk management - CORRECT ANSWER - - a means of preventing
problems and planning a response to any emergency that arises
- involves planning ahead , employing good diving practices and knowing what to do before an
emergency
CH 5 : Why should you avoid consuming drugs or alcohol prior to a dive? - CORRECT
ANSWER - it greatly increases the risk of decompression sickness in divers
CH 5 : What is the emergency procedure for suspected decompression sickness? - CORRECT
ANSWER - 1: move the afflicted diver out of danger
2: activate the Emergency Medial System (EMS)
3: monitor life support signs (pulse and respiration) and provide CPR if necessary
4: provide 100% oxygen via demand regulator if the diver is breathing
5: evacuation if necessary
CH 5 : What should you do if you become entangled underwater? - CORRECT
ANSWER - - relax, do not struggle to free yourself , moving around results in further
entanglement
- figure out how to untangle carefully or carefully use knife to cut the line away, cut away from
body and gear
CH 5 : Describe the procedure recommended for a safety stop - CORRECT ANSWER --
Should be conducted between 3 and 6 meters (10 and 20 feet) for three to five minutes before
coming up to the surface
- a safety stop is recommended on any dive up to 30 meters (100 feet)
- for dives over 30 meters (100 feet), a saftey stop is mandatory
CH 5 : When planning a repetitive dive, the ___________ dive should be made first -
CORRECT ANSWER - deepest
