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 anagramming the letters.
'out' means one lot of letters goes inside another.
'east' becomes 'e' ('E' can be a synonym of 'east').
'sails' with letters rearranged gives 'aisls'.
'aisls' going around 'e' is 'AISLES'.
'finding' is the 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.)" .)