Craft of a service tailor? (5,6)

'a service tailor?' is the definition.
I know nothing about this answer so I can't tell whether this works.

'craft' is the wordplay.
I cannot really understand how this works, but
'craft' could be 'cutter' (cutter is a kind of craft) and 'cutter' is located in the answer.
The remaining letters 'naval' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

'of' acts as a link.

Can you help me to learn more?