Join the Signal Corps

Battleships like the USS Oklahoma travel all over the world, so they need to be able to communicate over long distances. Battleships can also be very noisy, so they need to be able to communicate without words. In order to communicate in these ways the Navy would use Morse Code for communicating on radio telegrams over long distances, and Semaphore to communicate when it was too loud for talking. Semaphore is communicating with flags, where the position of each flag represents a letter. Morse Code uses sequences of long (dash) and short (dot) electronic “beeps” to represent letters.

Below are two alphabets. One is the Morse Code alphabet and the other is the Semaphore alphabet. Use these alphabets to craft your own message to the crew of the USS Oklahoma or translate the example message given below.


Sample message:
AIR RAID! AIR RAID! GENERAL QUARTERS! THIS IS NO DRILL!”

Semaphore:

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Morse Code:

Morse code sounds: http://www.youtube.com/watch?v=_J8YcQETyTw

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