Question 924 Deck Safety

70% to pass

When the alarm bell sounds on a positive-pressure, self-contained breathing apparatus, how long will reserve air supply last?

A About 4-5 minutes
B About 12-15 minutes
C About 18-20 minutes
D About 8-10 minutes
AI Explanation

The correct answer is A) About 4-5 minutes. When the alarm bell sounds on a positive-pressure, self-contained breathing apparatus (SCBA), it indicates that the user's reserve air supply is low, typically around 25% of the total capacity. Regulations require SCBA units to have a minimum reserve air supply of 4-5 minutes to allow the user to safely exit the hazardous environment. The other options are incorrect because they do not align with the standard reserve air supply requirements for SCBA units.

Related Questions
Q296:The signal T 0735 means _______________. Q152:The radiotelephone safety message urgently concerned with safety of a person wo... Q1249:When whistle signals are used for launching lifeboats, one short blast means __... Q1124:Upon completion of fueling a gasoline driven vessel it is necessary to _________... Q11:Distress signals may be _______________.

Ready to test your knowledge?

Take a Deck Safety Practice Exam
Official Resources
46 CFR Lifesaving Equipment USCG Marine Safety Center USCG National Maritime Center
← Previous All Questions Next →

Pass Your Coast Guard Licensing Exams!

Study offline, track your progress, and simulate real exams with the Coast Guard Exams app

Download on App Store Get it on Google Play Download for Mac