Naval unit announced current maritime control (8)

I believe the answer is:

flotilla

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'naval unit' is the definition.
(I know that Flotilla is a type of naval unit)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for flotilla that I've seen before include "set of boats" , "Fleet of small warships" , "collection of vessels" , "number of small ships" , "A lot of craft" .)

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

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