Son conveys person on boat showing decency, while getting exercise (13)
I believe the answer is:
sportsmanship
'son' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'conveys person on boat showing decency while getting exercise' is the wordplay.
I cannot quite understand how this works, but
'person' could be 'sportsman' (sportsman is a kind of person) and 'sportsman' is found in the answer.
'boat' could be 'ship' (I've seen this in another clue) and 'ship' is present in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for sportsmanship that I've seen before include "Equity" , "Playing fair, being a good loser, etc" , "Playing the game" , "Sense of fair play" .)