Crossword Genius

Turn out a lunatic marine (8)

Ross

I believe the answer is:

nautical

'marine' is the definition.
(I know this)

'turn out a lunatic' is the wordplay.
'turn out' indicates anagramming the letters.
'a'+'lunatic'='alunatic'
'alunatic' is an anagram of 'NAUTICAL'.

(Other definitions for nautical that I've seen before include "Like 8 21[HORATIO NELSON]" , "Marine" , "Concerning sailors" , "Relating to sailors" , "about boats" .)

I've seen this clue in The Globe and Mail.
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