The euro struggles to maintain rating in this area (9)
I believe the answer is:
hereabout
'this area' is the definition.
(hereabout means roughly in this area)
'the euro struggles to maintain rating' is the wordplay.
'struggles' is an anagram indicator.
'to maintain' is an insertion indicator (maintain can mean to keep or preserve).
'rating' becomes 'ab' (both can mean a sailor).
'the'+'euro'='theeuro'
'theeuro' anagrammed gives 'hereout'.
'hereout' enclosing 'ab' is 'HEREABOUT'.
'in' acts as a link.
(Other definitions for hereabout that I've seen before include "locally" , "nearby" .)