Real big wet messy stuff to be pumped out (5-5)

I believe the answer is:

bilge-water

'stuff to be pumped out' is the definition.

'real big wet messy' is the wordplay.
'messy' indicates an anagram.
'real'+'big'+'wet'='realbigwet'
'realbigwet' with letters rearranged gives 'BILGE-WATER'.

I've seen this clue in The Independent.

Want a hint initially instead of a full solution? Install my app