Resentment one controlled in ship (7)
I believe the answer is:
galleon
'ship' is the definition.
(type of ship)
'resentment one controlled' is the wordplay.
I cannot really see how this works, but
'resentment' could be 'gall' (synonyms) and 'gall' is present in the answer.
an anagram of 'one' is 'eon' which is within the answer.
No letters remain.
This explanation may well be incorrect...
'in' is the link.
Can you help me to learn more?
(Other definitions for galleon that I've seen before include "Spanish treasure ship" , "One might sink" , "Large old sailing vessel" , "Old Spanish war-ship" , "Historical warship with three or more masts" .)