SDI Open Water Test Questions and Complete Solutions

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