Crew member so upset with man-o'-war (9)

I believe the answer is:

oarswoman

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'crew member' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe there's a link between them I don't understand?

'so upset with man-o'-war' is the wordplay.
'upset with' is an anagram indicator.
'man'+'o'+'war'='manowar'
'so' with its letters mixed up with 'manowar' makes 'OARSWOMAN'.

Can you help me to learn more?

(Other definitions for oarswoman that I've seen before include "Rower" , "Girl having paddle" , "River user" .)

I've seen this clue in The Telegraph.

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