Outlet for a target surrounded by ships (4,6)
I believe the answer is:
flea market
'outlet' is the definition.
(flea market is a kind of outlet)
'a target surrounded by ships' is the wordplay.
'target' becomes 'mark' ('mark' can be a synonym of 'target').
'surrounded by' is an insertion indicator.
'ships' becomes 'fleet' (I've seen this before).
'a'+'mark'='amark'
'amark' put within 'fleet' is 'FLEA MARKET'.
'for' is the link.
(Other definitions for flea market that I've seen before include "Where second-hand sellers are" , "trading opportunity" , "Bazaar for cheap goods" , "has many cheap offers" , "selling old albums here?" .)