SDI Open Water Questions and Correct Answers the Latest Update and Recommended Version
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Vak
SDI
Instelling
SDI
Describe all the steps to assemble a BCD and regulator to a scuba cylinder.
→ Spin the tank around so that the back of the valve is facing you. Place the BCD band(s)
over the top of the cylinder so that the back of the BCD is facing you. Raise or lower
the BCD so the top is even with the cyl...
SDI Open Water Questions and Correct
Answers the Latest Update and
Recommended Version
Describe all the steps to assemble a BCD and regulator to a scuba cylinder.
→ Spin the tank around so that the back of the valve is facing you. Place the BCD band(s)
over the top of the cylinder so that the back of the BCD is facing you. Raise or lower
the BCD so the top is even with the cylinder valve. Fasten the buckles. Remove dust
cap, hold first stage in left hand, rotate the chambers until the primary second stage
sits on the right. Screw the knob on your first stage until it is finger tight. Connect the
low pressure inflator hose to the stem on the BCD's inflator. Turn on the air.
How should you go about checking that your BCD is attached securely to your cylinder?
→ You lift up by the BCD and gently shake it.
What is the purpose of streamlining your hoses and accessories?
→ So they don't get tangled/ in the way.
Describe from the start to finish the steps to disassemble your scuba system.
→ 1. Remove accessories and weights
→ 2. Decompress the system: Turn the valve knob completely clockwise. Decompress one
of the second gauges (purge button or the auto inflator button to vent air remaining in
the hoses)
→ 3. 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.
→ 4. Undo the straps and remove the BCD from the cylinder.
→ 5. Rinse off gear and fill and dump BCD
*Describe two important features of a weight system.*
→ 1. To weigh you down
→ 2. You can use different weights
What should you do any time the second stage is out of your mouth?
→ Put the back up in your mouth then do either a sweep or reach technique to get it
back.
Describe two ways to clear a flooded second stage.
→ 1. Depress the purge button before inhaling.
→ 2. Exhale into the mouthpiece.
What is the hand signal for out-of-air?
→ Flat hand cut across your neck
The thumbs up signal means "OK." True or False?
→ False
Describe two different ways to indicate "OK".
→ 1. Pointer thumb touch
→ 2. Fist on your head
Describe how to perform a giant stride entry off a boat.
→ Stand on the edge of the dive platform, check the water below to make sure it is clear
of other divers, put your right hand over your mask and regulator and your left hand
over your weight belt buckle, stand straight, look directly ahead and take a big step
out off the edge of the platform. Signal OK if everything is alright.
→ 1. Giant stride
→ 2. Controlled sated
→ 3. Back roll entry
→ 4. Shore entry
Describe the two emergency out-of-air ascents.
→ 1. Signal out of air
→ 2. Remove regulator, exhale, reach for your buddy's alternate air source.
→ 3. Put in your mouth, purge and breath exchanging "OK" and "Go up" hand signals.
→ 4. Donor should hold onto the receiver's BCD shoulder strap as you slowly ascend
together.
→ 5. Orally inflate your BCD when you reach the surface.
→
→ 1. Signal out of air
→ 2. Donor grabs buddy, takes a breath, and gives buddy regulator.
→ 3. Receiver purges and takes 2 breaths and passes it back.
→ 4. Donor keeps hand on the hose and they both go up repeating steps 2-3.
How do you vent air from a BCD?
→ By holding the end of your inflator hose over your head and depressing the inflator
button.
A properly weighted scuba diver should float at _____________ when her BCD is deflated
and lungs are fully inflated.
→ eye level
How do you relieve a leg cramp?
→ By grabbing your fin and stretching it out or having a buddy do it for you.
What is the reciprocal of a 200-degree heading?
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