Young lady in Scotland sent gangster back on ship, specifically (6)
I believe the answer is:
lassie
'young lady' is the definition.
(I know that lassie is a type of young lady)
'gangster back on ship specifically' is the wordplay.
'gangster' becomes 'al' (Al Capone).
'back' is a reversal indicator.
'on' says to put letters next to each other.
'ship' becomes 'SS' (prefix in ship names eg SS Great Britain).
'specifically' becomes 'ie' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'al' back-to-front is 'la'.
'la'+'ss'+'ie'='LASSIE'
'in scotland sent' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for lassie that I've seen before include "Young Scottish female" , "''Will ye go ..., go'' (folksong)" , "dog in pictures" , "Young Scottish girl or Hollywood lost dog" , "Film and TV dog" .)