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

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

'keep parts for sailor' is the wordplay.
I cannot really see how this works, but
'sailor' could be 'ab' (abbreviation for able seaman) and 'ab' is located in the answer.
'keep' could be 'castle' (I've seen this before) and 'castle' is present in the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...

Can you help me to learn more?