Love new supertanker, essentially backed by Saudi money, in dock (2,5)
I believe the answer is:
on trial
'in dock' is the definition.
'love new supertanker essentially backed by saudi money' is the wordplay.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'new' becomes 'n'.
'essentially' says to take the centre.
'backed by' is a charade indicator (letters next to each other).
'saudi money' becomes 'rial' (currency of Saudi Arabia).
The middle of 'supertanker' is 't'.
'o'+'n'+'t'+'rial'='ON TRIAL'
(Other definitions for on trial that I've seen before include "Probationary" , "Undergoing court process" , "like a footballer seeking club?" , "In court to answer charge, in the dock" , "before the judge" .)