Attendant seen around a steamship voyage (7)
I believe the answer is:
passage
'voyage' is the definition.
(thesaurus)
'attendant seen around a steamship' is the wordplay.
'attendant' becomes 'page' (page is a kind of attendant).
'seen around' indicates putting letters inside.
'steamship' becomes 'ss' (nautical abbreviation).
'a'+'ss'='ass'
'page' going around 'ass' is 'PASSAGE'.
(Other definitions for passage that I've seen before include "Piece of text or music" , "Way through; part of text" , "course" , "street" , "Transit - part of book etc" .)