Sailor's emergency letters (3)
I believe the answer is:
sos
(Other definitions for sos that I've seen before include "Coded distress signal" , "Mayday call" , "plea" , "Help initially, Mr Morse" , "Call for help" .)
I believe the answer is:
sos
(Other definitions for sos that I've seen before include "Coded distress signal" , "Mayday call" , "plea" , "Help initially, Mr Morse" , "Call for help" .)