The distress signal light is designed to emit about ________ flashes per minute and is capable of flashing _____ hours if used continuously.

The distress signal light is designed to emit about ________ flashes per minute and is capable of flashing _____ hours if used continuously.

• A. 30 per minute; 6 hours
• B. 50 per minute; 9 hours
• C. 60 per minute; 12 hours
• D. 40 per minute; 7 hours

Answer: (B)

A distress signal light must be both highly noticeable and capable of lasting through an extended search or waiting period. A pattern of about 50 flashes per minute provides a clear, rhythmical signal that eye catches in low light without draining power too quickly. Pairing that with roughly 9 hours of continuous flashing gives enough endurance to cover typical rescue scenarios, including overnight waits, without needing frequent replacement or recharging. Slower rates like 30 or 40 flashes per minute would be less attention-grabbing, while faster rates like 60 flashes per minute use more power and shorten battery life; durations much shorter than 9 hours risk losing the signal during a long SAR operation.

A distress signal light must be both highly noticeable and capable of lasting through an extended search or waiting period. A pattern of about 50 flashes per minute provides a clear, rhythmical signal that eye catches in low light without draining power too quickly. Pairing that with roughly 9 hours of continuous flashing gives enough endurance to cover typical rescue scenarios, including overnight waits, without needing frequent replacement or recharging. Slower rates like 30 or 40 flashes per minute would be less attention-grabbing, while faster rates like 60 flashes per minute use more power and shorten battery life; durations much shorter than 9 hours risk losing the signal during a long SAR operation.