Naval man? Fit type force employed (5,7)

I believe the answer is:

petty officer

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

'naval man?' is the definition.
'petty officer' can be an answer for 'man?' (petty officer is a kind of man). I'm unsure of the 'naval' bit.

'fit type force employed' is the wordplay.
'employed' indicates anagramming the letters (the same letters employed in a new way).
'fit'+'type'+'force'='fittypeforce'
'fittypeforce' anagrammed gives 'PETTY OFFICER'.

Can you help me to learn more?

(Other definitions for petty officer that I've seen before include "rank" , "Navy NCO" , "Naval NCO" , "Sailor" .)

I've seen this clue in The Telegraph.

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