Relay-controlled emergency lanterns have an...

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Question 1 of 205eccefa4bacbc34ba4d4859a

Relay-controlled emergency lanterns have an internal storage battery that is maintained in a charged state when normal power is available. According to 46 CFR, Subchapter J (Electrical Engineering), upon a loss of normal power, what is the minimum time the internal battery should be capable of providing light?

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🔍 Key Concepts

• 46 CFR Subchapter J requirements for emergency lighting systems • Role of relay-controlled emergency lanterns when normal ship’s power fails • How long emergency power sources are typically required to last to allow safe evacuation or restoration of power

💭 Think About

• Think about the purpose of relay-controlled emergency lanterns: What critical period must they cover after a blackout? • Compare the listed times with the typical regulatory expectations for emergency lighting on vessels—are they meant only for immediate escape, or for a longer stabilization period? • Which of these durations best matches the idea of maintaining safe lighting in passageways and muster areas while crew respond to the emergency?

✅ Before You Answer

• Look up the exact wording in 46 CFR, Subchapter J, in the section on emergency lighting and power systems or special emergency lanterns. • Verify that the time requirement refers specifically to internal storage batteries of relay-controlled lanterns, not to general ship emergency generators. • Confirm whether the regulation speaks about a minimum duration of maintained illumination under full rated load.

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