Nautical call for help (3)

I believe the answer is:

sos

(Other definitions for sos that I've seen before include "Mayday call" , "International distress code" , "Appeal for help" , "Emergency message" , "Distress call" .)

I've seen this clue in the USA Today.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.