Japanese Navy Signal Flags

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The Japanese Navy Signal Flags are a set of maritime signal flags for conveying messages in the Japanese language.[1] The system generally uses the standard International Signal Flags, assigning both the letter, number and repeater flags to various kana, roughly following Iroha order for the standard letter flags. The system also has several unique flags for some kana, as well as for conveying non-alphabetic messages.

ICS name Japanese Navy name Flag Kana Wabun code
Alfa Gozen ICS Alpha.svg い / イ
"I" 		  ▄ ▄▄▄ 
Bravo Aka (red) ICS Bravo.svg は / ハ
"Ha" 		  ▄▄▄ ▄ ▄ ▄ 
Charlie Sisu ICS Charlie.svg に / ニ
"Ni" 		  ▄▄▄ ▄ ▄▄▄ ▄ 
Delta Teshiki ICS Delta.svg ほ / ホ
"Ho" 		  ▄▄▄ ▄ ▄ 
Echo Isuto ICS Echo.svg へ / ヘ
"He" 		  ▄ 
Foxtrot Efu ICS Foxtrot.svg ち / チ
"Chi" 		  ▄ ▄ ▄▄▄ ▄ 
Golf Shairo ICS Golf.svg り / リ
"Ri" 		  ▄▄▄ ▄▄▄ ▄ 
Hotel Takaso ICS Hotel.svg ぬ / ヌ
"Nu" 		  ▄ ▄ ▄ ▄ 
India Takuten ICS India.svg Dakuten   ▄ ▄ 
Juliet ICS Juliet.svg Wabun code "Wo" =
J Morse (  ▄ ▄▄▄ ▄▄▄ ▄▄▄ )
Kilo Ke ICS Kilo.svg わ / ワ
"Wa" 		  ▄▄▄ ▄ ▄▄▄ 
Lima Eru ICS Lima.svg か / カ
"Ka" 		  ▄ ▄▄▄ ▄ ▄ 
Mike ICS Mike.svg よ / ヨ
"Yo" 		  ▄▄▄ ▄▄▄ 
November Kiroren ICS November.svg た / タ
"Ta" 		  ▄▄▄ ▄ 
Oscar Oba ICS Oscar.svg れ / レ
"Re" 		  ▄▄▄ ▄▄▄ ▄▄▄ 
Papa ICS Papa.svg つ / ツ
"Tsu" 		  ▄ ▄▄▄ ▄▄▄ ▄ 
Quebec Kina ICS Quebec.svg ね / ネ
"Ne" 		  ▄▄▄ ▄▄▄ ▄ ▄▄▄ 
Romeo Aru ICS Romeo.svg な / ナ
"Na" 		  ▄ ▄▄▄ ▄ 
Sierra Kigan ICS Sierra.svg ら / ラ
"Ra" 		  ▄ ▄ ▄ 
Tango Tebu ICS Tango.svg む / ム
"Mu" 		  ▄▄▄ 
Uniform Yu ICS Uniform.svg う / ウ
"U" 		  ▄ ▄ ▄▄▄ 
Victor But ICS Victor.svg く / ク
"Ku" 		  ▄ ▄ ▄ ▄▄▄ 
Whiskey Tafuryu ICS Whiskey.svg せ / セ
"Se" 		  ▄ ▄▄▄ ▄▄▄ ▄▄▄ ▄  Does not match "W" in Morse code.
Morse code "W" = "Ya" in Wabun code.
Xray Etsukusu ICS X-ray.svg ま / マ
"Ma" 		  ▄▄▄ ▄ ▄ ▄▄▄ 
Yankee Wai ICS Yankee.svg け / ケ
"Ke" 		  ▄▄▄ ▄ ▄▄▄ ▄▄▄ 
Zulu Zetsuto ICS Zulu.svg ふ / フ
"Fu" 		  ▄▄▄ ▄▄▄ ▄ ▄ 
Repeater 1 Seido ICS Repeat One.svg ろ / ロ
"Ro" 		  ▄ ▄▄▄ ▄ ▄▄▄  No Morse representation
Repeater 2 Bango ICS Repeat Two.svg ん / ン
"N" 		  ▄ ▄▄▄ ▄ ▄▄▄ ▄  No Morse representation
Repeater 3 Sankai ICS Repeat Three.svg さ / サ
"Sa" 		  ▄▄▄ ▄ ▄▄▄ ▄ ▄▄▄  No Morse representation
None Houku IJN pennant Shi.svg し / シ
"Shi" 		  ▄▄▄ ▄▄▄ ▄ ▄▄▄ ▄ 
None Jinkei IJN pennant Yu.svg ゆ / ユ
"Yu" 		  ▄▄▄ ▄ ▄ ▄▄▄ ▄▄▄ 
None Undo IJN pennant To.svg と / ト
"To" 		  ▄ ▄ ▄▄▄ ▄ ▄ 
None Taiban IJN pennant Chi.svg
None Rekkon IJN pennant Ru.svg る / ル
"Ru" 		  ▄▄▄ ▄ ▄▄▄ ▄▄▄ ▄ 
Pennant 4 Sentai ICS Pennant Four.svg お / オ
"O" 		  ▄ ▄▄▄ ▄ ▄ ▄  Does not match "4" in Morse code
  1. ^ Dickson, David, Japanese Navy Signal Flags (PDF), retrieved 20 April 2020


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