Crossword Genius

The ship's captain in charge of armada dropping off ambassador (4)

Ross

I believe the answer is:

boss

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

'the ship's captain in charge' is the definition.
I can't judge whether this defines the answer.

'of armada dropping off ambassador' is the wordplay.
'of' is an anagram indicator (the answer comes from or 'of' the letters).
'dropping off' is a deletion indicator.
'ambassador' with 'armada' removed is 'bsso'.
'bsso' anagrammed gives 'BOSS'.

Can you help me to learn more?

(Other definitions for boss that I've seen before include "Domineer" , "Manager (colloq.); stud" , "One managing" , "Control" , "Stud; employer" .)

I've seen this clue in The Irish Times and the Irish Times (Crosaire).
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