Keep parts for sailor appealing to film's producers (8)

'appealing to film's producers' is the definition.
I can't judge whether this definition defines the answer.

'keep parts for sailor' is the wordplay.
I cannot quite see how this works, but
'sailor' could be 'ab' (abbreviation for able seaman) and 'ab' is found within the answer.
'keep' could be 'castle' (I've seen this before) and 'castle' is located in the remaining letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?