Boy inside unchanged refuge (5)
I believe the answer is:
oasis
'refuge' is the definition.
(I know that oasis is a type of harbor)
'boy inside unchanged' is the wordplay.
'inside' indicates the central letters.
'unchanged' becomes 'as is' (as things currently are).
The central letter of 'boy' is 'o'.
'o'+'asis'='OASIS'
(Other definitions for oasis that I've seen before include "Place of peace" , "Desert pool" , "Famous group" , "Britpop group" , "Place of calm in troubled times" .)