Japanese flag flies in front of building. Japanese sailor operates lever of valves in engine room of submarine. Japanese Navy sailors in training test batteries and receive instruction in care of batteries. Instructor explains principles of underwater sound. Japanese Navy students get instruction from senior officers.
Japanese naval officer instructs Japanese sailors in training on underwater sound through a diagram on blackboard. Students leave the class room. Japanese Navy officer wears headphone to check sound. Japanese student makes sound in a pipe and the other wears stethoscope-like device on ears.
Japanese naval officer exercises with sailors in training. Japanese sailors play a game. White clothes hang in line. Group of Japanese Navy sailors take bath in bathing area. Japanese students write in class room. View of cherry blossoms. Naval officers salute during a Japanese Navy training graduation or deployment ceremony. One of the officers marches forward. Barracks in the background at Japanese Navy training base
Hand sending method of International Morse code. A United States Army operator operates the hand key to write a coded message. Senior officer Young talks about rhythmic and uniform use of Dits and Dahs while the other officer operates the hand key. Operator demonstrates letters using only Dits and only Dahs on screen. Officer explains phonetic alphabet for the word Hotel. Dits sound of Hotel equates to the sound of a horse galloping.
Officer Young explains the sound of three beat letters on screen. He explains the use of Morse Code Dits and Dahs for phonetic alphabets Seirra Oscar Seirra (SOS). He further talks about the use of Dits and Dahs for Phonetic alphabets India(I),Mike(M),Echo(E),Tango(T). An Army operator demonstrates use of Dits and Dahs for phonetic alphabet Yankee(Y),Charlie(C),Juliet(J),Romeo(R) through steps. Officer Young explains the pattern of phonetic alphabets Lima Oscor Water(LOW).
United States Army Officer Young explains proper spacing of Dits and Dahs in words. He explains about proper spacing in words and how the meaning can change with incorrect spacing with an example of two words 'Low' and 'Enemy' on screen. He states the importance of proper spacing of Dits and Dahs between words and groups by an example "We got here'.
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