Unruly large women getting in beer on ship (7)

I believe the answer is:

lawless

I'm a little stuck... Click here to teach me more about this clue!

'unruly' is the definition.
(I've seen this before)

'large women getting in beer on ship' is the wordplay.
'large' becomes 'l'.
'women' becomes 'w'.
'getting in' indicates putting letters inside.
'beer' becomes 'ale' (I've seen this before).
'on ship' becomes 'ss' (I am not sure about the 'on' bit.).
'w' going into 'ale' is 'awle'.
'l'+'awle'+'ss'='LAWLESS'

Can you help me to learn more?

(Other definitions for lawless that I've seen before include "Anarchic, without any controls" , "Anarchy" , "Slew Sal for being criminal" , "disobedient" , "insubordinate" .)

I've seen this clue in The Independent.

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