In 1915, the device that allowed Morse code to be sent underwater was the "submarine telegraphy" system, specifically utilizing the "submarine cable" technology. This system transmitted electrical signals through insulated cables laid on or beneath the ocean floor. By using variations in electrical currents, operators could effectively send Morse code messages underwater, facilitating communication between ships and shore stations.
Fessenden oscillator
Morse CodeShips in 1912 received messages by Morse Code.
The periscope is used primarily to view the surface of the water around the submarine, as well as to transmit Morse code messages to other subs or ships in the vicinity.
People used the Morse Code to send messages from far distances Morse code was used by how long you hold it down.
A message transmitted by a telegraph is called a TeleGram.
Well I'm just guessing but would would use Morse code to communicate with a submarine and Morse code was a great idea like in movies when somebody has a good idea a light bulb comes on above there head.
Samuel Morse, because he wanted to send messages to people faster than mail.
Samuel Morse, because he wanted to send messages to people faster than mail.
use a Morse Code
use a morse code
samuel morse