Which of the following statements of Coast Guard Regulations (46 CFR) concerning battery installations is correct? A. Sign, permanently secured to the battery trays, indicating that 'naked lights or smoking is prohibited in the vicinity' is not necessary to be posted if trickle charging is used. B. When power ventilation is required, blower blades must be nonsparking and the system must be interlocked with the battery charger to prevent simultaneous operation. C. Trays should be chocked with wood strips or equivalent to prevent movement and each tray should be fitted with nonabsorbent insulating supports on the bottom. D. Power and lighting batteries must be of the lead-acid type only.

Which of the following statements of Coast Guard Regulations (46 CFR) concerning battery installations is correct? A. Sign, permanently secured to the battery trays, indicating that 'naked lights or smoking is prohibited in the vicinity' is not necessary to be posted if trickle charging is used. B. When power ventilation is required, blower blades must be nonsparking and the system must be interlocked with the battery charger to prevent simultaneous operation. C. Trays should be chocked with wood strips or equivalent to prevent movement and each tray should be fitted with nonabsorbent insulating supports on the bottom. D. Power and lighting batteries must be of the lead-acid type only.
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Answer: C
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