Study covers energy in ships, English, given new rating (10)
I believe the answer is:
reassessed
'given new rating' is the definition.
(assessed or rated again)
'study covers energy in ships english' is the wordplay.
I cannot really see how this works, but
'energy' could be 'e' (physics symbol as in E=mc2) and 'e' is found within the answer.
'english' could be 'e' (abbreviation) and 'e' is located in the answer.
'ships' could be 'ssss' (the abbreviation for steamship, twice) and 'ssss' is located in the remaining letters.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for reassessed that I've seen before include "Estimated afresh" , "Evaluated again" , "Calculated again" .)