Question 377General Subjects - 1st Asst/Chief
70% to passWhich of the following fire extinguishing agents which may be found aboard ship is designated as an ozone-depleting substance as defined in the Montreal Protocol on Substances that Deplete the Ozone Layer and is controlled as a result?
AHalon 1301
BCartridge-operated dry chemical
CCO2
DCartridge-operated dry powder
AI Explanation
The correct answer is A) Halon 1301. Halon 1301 is designated as an ozone-depleting substance under the Montreal Protocol on Substances that Deplete the Ozone Layer and is therefore controlled. Halon 1301 is a highly effective fire extinguishing agent, but its use is restricted due to its harmful effects on the ozone layer. In contrast, the other options - cartridge-operated dry chemical, CO2, and cartridge-operated dry powder - are not ozone-depleting substances and are generally considered safer alternatives for fire suppression aboard ships.
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