Sailor dispatched somewhere else (6)
I believe the answer is:
absent
'somewhere else' is the definition.
(thesaurus)
'sailor dispatched' is the wordplay.
'sailor' becomes 'ab' (abbreviation for able seaman).
'dispatched' becomes 'sent' (I've seen this before).
'ab'+'sent'='ABSENT'
(Other definitions for absent that I've seen before include "AWOL" , "Missing, lacking" , "Away" , "nowhere to be seen" , "Not present or focused" .)