One out of three decorative sets of nautic alphabets from A to Z, this one with a sailor boy holding flags in different positions for signaling (30 symbols, A-Z plus some punctuation, outline whose color can be changed).
More info: https://en.wikipedia.org/wiki/Flag_semaphore
As a font:
https://inkscape.org/~Moini/%E2%98%85nautic-alphabets-color-font