Costume turned red on ship (5)
I believe the answer is:
dress
'costume' is the definition.
(I know that dress is a type of costume)
'turned red on ship' is the wordplay.
'turned' indicates an anagram.
'on' says to put letters next to each other.
'ship' becomes 'SS' (prefix in ship names eg SS Great Britain).
'red' is an anagram of 'dre'.
'dre'+'ss'='DRESS'
(Other definitions for dress that I've seen before include "Put on one's clothes" , "Straighten the line" , "To prepare" , "what she wears?" , "(Article of) clothing" .)