In raging seas, Warne shows knowledge (9)

I believe the answer is:

awareness

I'm a little stuck... Click here to teach me more about this clue!

'knowledge' is the definition.
(I know that awareness is a type of knowledge)

'in raging seas warne' is the wordplay.
'seas warne' can be anagrammed to 'AWARENESS'.
However, I am not clear how this is indicated.

'shows' is the link.

Can you help me to learn more?

(Other definitions for awareness that I've seen before include "understanding" , "Knowledge (of a fact)" , "Insight" , "Knowledge or consciousness" , "Knowing" .)

I've seen this clue in the Sydney Morning Herald.

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