The pictured apparatus is a closed circuit SCBA, which means it recirculates exhaled air and removes carbon dioxide, as opposed to open circuit SCBA which discharges exhaled air and requires a fresh air supply. It is not SCUBA apparatus as it is designed for use in hazardous environments, not recreational diving.

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Pictured Is

Question 45

Multiple Choice

Pictured is

A) an open circuit SCBA
B) a closed circuit SCBA
C) SCUBA apparatus
D) none of the above
Pictured is A) an open circuit SCBA B) a closed circuit SCBA C) SCUBA apparatus D) none of the above