One that’s written to Joy, possibly recalled a ship in port (6)
I believe the answer is:
odessa
'port' is the definition.
(Odessa is a Ukrainian port)
'one that's written to joy possibly recalled a ship' is the wordplay.
'one that's written to joy possibly' becomes 'ode' (Beethoven's Ode to Joy).
'recalled' is a reversal indicator (to recall can mean to bring something back).
'ship' becomes 'SS' (prefix in ship names eg SS Great Britain).
'a'+'ss'='ass'
'ass' back-to-front is 'ssa'.
'ode'+'ssa'='ODESSA'
'in' is the link.
(Other definitions for odessa that I've seen before include "Battleship Potemkin mutiny port" , "Black Sea location" , "Do seas come into Ukrainian city?" , "Ukrainian location" , "Ukrainian Black Sea port" .)