Sonar used to find horses (5)

I believe the answer is:

roans

'horses' is the definition.
(roan is a kind of horse)

'sonar used' is the wordplay.
'used' indicates anagramming the letters.
'sonar' with letters rearranged gives 'ROANS'.

'to find' is the link.

(Another definition for roans that I've seen is " Horses with coats flecked with grey or white".)

I've seen this clue in The Mirror.

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