Where sailors call for sport, maybe (5)
I believe the answer is:
ports
'where sailors call' is the definition.
The definition suggests a singular noun but the answer is a plural noun.
'sport maybe' is the wordplay.
'maybe' is an anagram indicator.
'sport' is an anagram of 'PORTS'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for ports that I've seen before include "Places where people and merchandise enter or leave a country" , "Harbours" .)