How many flashes per minute does the strobe light emit?

How many flashes per minute does the strobe light emit?

• A. 25-40
• B. 50-70
• C. 70-90
• D. 15-25

Answer: (B)

Visual distress signals use a steady, moderate flash rate so they’re quickly noticed at sea and easy to interpret. The strobe should flash at about one per second, which is roughly 60 flashes per minute. The standard range is about 50 to 70 per minute, so the best answer is within that window. Rates slower than this (like 15–40) can be missed in rough conditions, while faster rates (70–90) can be harder to count and may be less reliably recognized as a distress signal.

Visual distress signals use a steady, moderate flash rate so they’re quickly noticed at sea and easy to interpret. The strobe should flash at about one per second, which is roughly 60 flashes per minute. The standard range is about 50 to 70 per minute, so the best answer is within that window. Rates slower than this (like 15–40) can be missed in rough conditions, while faster rates (70–90) can be harder to count and may be less reliably recognized as a distress signal.