Caps only font. You can use the glyphs placed at the lowercase to add a different second letter in pairs like EE, FF, LL, NN, OO, SS, TT, ZZ, etc. and to avoid graphic repetitions in a single word or phrase. Extra "c" at the "¢" glyph. (NB: To create this one I have greatly exaggerated the method used by my admired Beate -sorry, Maestra- in her font db Whisper, which successfully simulated hand-drawn letters.)
I have made a font with International Maritime Signal Flags before, but this time they are coloured correctly (in grey scale). White is blank ( ), yellow is little dots (::), red is 33% diagonals (\\), blue is 50% diagonals (//), black is filled. Lower case letters are the patterns with no colouring, for those who want to colour in the fields themselves.
I have now added numbers. The regular numerals (0-9) are the square NATO flags, and the subscript numerals (₀₋₉) are the templates of the NATO number flags. The roman numerals (I-X, X representing 0) are the longer ICS flags, and the lower case roman numerals (i-x) are the uncoloured ICS flags.
On top of that there are four substitute flags, which can be found in the superscript numbers (¹⁻⁴) and the fifth fractions (⅕-⅘).