A point about Royal Navy chaps showing tattoo, perhaps (9)
I believe the answer is:
adornment
'tattoo perhaps' is the definition.
(I know that tattooing is a type of body art)
'a point about royal navy chaps' is the wordplay.
'point' becomes 'dot' (synonyms).
'about' means one lot of letters goes inside another.
'royal navy' becomes 'RN' (abbreviation for Royal Navy).
'chaps' becomes 'men' (chap means a man).
'rn'+'men'='rnmen'
'dot' enclosing 'rnmen' is 'dornment'.
'a'+'dornment'='ADORNMENT'
'showing' acts as a link.
(Other definitions for adornment that I've seen before include "Decoration" , "Making elaborate" , "Ornamentation" , "Embellishment" , "form of beautification?" .)