Maybe sails out East finding passages (6)
I believe the answer is:
aisles
'passages' is the definition.
(aisle is a kind of passage)
'maybe sails out east' is the wordplay.
'maybe' indicates an anagram.
'out' means one lot of letters goes inside another.
'east' becomes 'e' (abbreviation).
'sails' is an anagram of 'aisls'.
'aisls' going around 'e' is 'AISLES'.
'finding' acts as a link.
(Other definitions for aisles that I've seen before include "Passageways between seats" , "Passages between rows of seats" , "Total disorder" , "Pathways in a church (6)" , "Lassie (anag.)" .)