Scuba diving

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[edit] Scuba Diving

SCUBA is an Self Contained Underwater Breathing Apparatus. Divng while using SCUBA enables the diver to stay underwater for an extended period of time. SCUBA Divers compress the air in their tanks to enable them to stay underwater for a time period. SCUBA divers use BCD (Bouyancy Compensator Device) to alter their bouyancy to enable them to float or sink or stay neutrally bouyant (when the diver stays still in the water)

SCUBA EQUIPMENT:

Tank: This is a large metal cylinder either created from steal or aluminium. This tank holds the divers compressed air.

Regulator: A regulator is a divers breathing apparatus, this is made up of two stages. The first stage attaches to the divers tank via an O-ring sealed valve. The second stage is the part of the regulator the diver breathes from, this contains a simple device so when the dive breathes in the tank releases air and when the diver breathes out it expels the air out of the exhaust valves.

BCD Bouyancy Compensator Device: This device is like a sleeve-less jacket that the diver wears to control his bouyancy, the BCD is mainly made up of large air-tight bags. The diver has a little device attached to his BCD, there are two buttons on this device when the diver push one it pumps air into his BCD's air bags causing hin to float but when he push's theother button it releases air from his BCD and makes him sink.

Weight Belt & Weights: SCUBA divers wear weight belts to make them sink and to counteract the bouyancy of the wetsuit (if they wear one). Lead weigths are attached to the belt.


Also you will need a mask, snorkel and fins and maybe a wetsuit.