Ship's doctor made nurse go off the rails (7)
I believe the answer is:
surgeon
'ship's doctor' is the definition.
(I've seen this before)
'nurse go off the rails' is the wordplay.
'nurse go' can be anagrammed to 'SURGEON'.
Though, I am not sure how this is indicated.
'made' is the link.
Can you help me to learn more?
(Other definitions for surgeon that I've seen before include "Man with knife" , "Doctor with a scalpel" , "Naval doctor" , "Medical man" , "Hospital worker" .)