Some in Braemar mad about ships (6)
I believe the answer is:
armada
'ships' is the definition.
(I've seen this before)
'some in braemar mad about' is the wordplay.
'some in' says the answer is hidden in the clue.
'ARMADA' is hidden within 'braemar mad about'.
(Other definitions for armada that I've seen before include "Large flotilla" , "vessels" , "Large Spanish fleet" , "Fighting unit" , "Many ships" .)