Ran across an Apple Watch app the gives you the ability to text using morse code.
apps.apple.com
Morse Code Keys
Remember when you couldn’t reach your phone to send that text, and talking aloud wasn’t an option? That’s why we made this app; for the occasional texts that require a keyboard on your watch. Whether you know morse code or you plan on learning it (there’s a cheat sheet in the app), we know...
apps.apple.com