Calls from capsized sailor not getting an answer (5)
I believe the answer is:
names
'calls' is the definition.
('name' can be a synonym of 'call')
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for names that I've seen before include "Titles" , "Some people drop these to sound important" , "identification" , "celebrities" , "Paul, Pat, John" .)