Flag semaphore chart
Every letter, A to Z.
- A
- B
- C
- D
- E
- F
- G
- H
- I
- J
- K
- L
- M
- N
- O
- P
- Q
- R
- S
- T
- U
- V
- W
- X
- Y
- Z
Where it comes from
Each letter is a pair of arm positions, like the hands of a clock. Navies and scouts have used flags this way since the 1800s to talk across water or a field, as far as a telescope can see.
A message worth knowing: All clear. The message every signaler hopes to send.
Learn it by heart
This is the cipher desk from Covert Mail, our free app for learning codes. The app teaches Flag semaphore a few characters at a time, plans practice around the ones you miss, and keeps an archive of famous real messages to unlock. It is coming soon to the App Store and Google Play.
Coming soon to the App Store and Google Play
More codes and ciphers: