Commotion with sailors on deck (5)
I believe the answer is:
adorn
'deck' is the definition.
(I've seen this in another clue)
'commotion with sailors' is the wordplay.
'commotion' becomes 'ado' (ado is a kind of commotion).
'with' is a charade indicator (letters next to each other).
'sailors' becomes 'RN' (abbreviation for Royal Navy).
'ado'+'rn'='ADORN'
'on' acts as a link.
(Other definitions for adorn that I've seen before include "Attire" , "Make more attractive" , "dress" , "Bedeck" , "Embellish, decorate" .)