How to Send a Rescue Signal by Semaphore
The semaphore flag-signaling system is an alphabet-based system that requires waving a pair of hand-held flags in particular patterns. Here's how you send a rescue signal using the flags.
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You Will Need
- Semaphore flags
- Receiving party
- International Code of Signals (optional)
Steps
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Step 1
Get the receiver's attention
Get the attention of the person you wish to send the signal to by waving both of your flags repeatedly overhead in a scissor-like motion.
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Step 2
Wait for acknowledgment
Wait for the receiving party to send the semaphore letter K with their flags. This is the signal to proceed.
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There are unique flag positions for each letter of the alphabet.
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Step 3
Transmit N-C
Transmit the letters N-C using your semaphore flags. Move directly from the N position to the C position without stopping.
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In the International Code of Signals the letters N-C stand for "I am in distress and require immediate assistance."
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Step 4
Bring your flags down
Bring your flags down in front of you with the flag staffs crossing each other after you have finished.
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Step 5
Wait for acknowledgment
Wait for the receiver to send the letter C, acknowledging your distress call. If your message was not received, they will send the letters I-M-I. If this happens, resend your message.
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The International Code of Signals was drafted in 1855 by the British Board of Trade.
