Trouble with sailors coming to deck (5)
I believe the answer is:
'deck' is the definition.
(I've seen this before)
'trouble with sailors' is the wordplay.
'trouble' becomes 'ado' (both can mean bother or commotion).
'with' says to put letters next to each other.
'sailors' becomes 'RN' (abbreviation for Royal Navy).
'coming to' is the link.
(Other definitions for adorn that I've seen before include "Improve appearance" , "Make more attractive" , "Embellish, decorate" , "Bedeck" , "Deck" .)