Crossword Genius

Oil rig labourer to supplant sailor in rabble (10)

Ross

I believe the answer is:

roustabout

'oil rig labourer' is the definition.
(roustabout can mean an oil rig labourer)

'supplant sailor in rabble' is the wordplay.
'supplant' becomes 'oust' (I've seen this in another clue).
'sailor' becomes 'ab' (abbreviation for able seaman).
'in' indicates putting letters inside.
'rabble' becomes 'rout' (synonyms).
'oust'+'ab'='oustab'
'oustab' inserted inside 'rout' is 'ROUSTABOUT'.

'to' is the link.

(Another definition for roustabout that I've seen is " Oil worker".)

I've seen this clue in The Times.
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