International Civil Aviation Organization (ICAO) alphabet (also known as the international radiotelephony spelling alphabet and incorrectly as the NATO phonetic alphabet), Morse Code, and Signal Flags.

Word	Morse	Signal Flag	Word	Morse	Danish
Alfa	. -		Zero	- – - – -	Ægir
Bravo	- . . .		One	. – - – -	Ødis
Charlie	- . – .		Two	. . – - -	Åse
Delta	- . .		Three	. . . – -
Echo	.		Four	. . . . -
Foxtrot	. . – .		Five	. . . . .
Golf	- – .		Six	- . . . .
Hotel	. . . .		Seven	- – . . .
India	. .		Eight	- – - . .
Juliet	. – - -		Nine	- – - – .
Kilo	- . -
Lima	. – . .
Mike	- -
November	- .
Oscar	- – -
Papa	. – - .
Quebec	- – . -
Romeo	. – .
Sierra	. . .
Tango	-
Uniform	. . -
Victor	. . . -
Whiskey	. – -
Xray	- . . -
Yankee	- . – -
Zulu	- – . .