Ship contains old agent's log produced by those who have left politics with views that aren't right (10)
I believe the answer is:
socialists
'ship contains old agent's log produced by those' is the definition.
I can't judge whether this defines the answer.
'left politics with views that aren't right' is the wordplay.
I cannot really understand how this works, but
'left' could be 'al' (I've seen this in other clues) and 'al' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
'who have' is the link.
Can you help me to learn more?
(Another definition for socialists that I've seen is " They are left".)