Nautical poles
I think it could be either:
'nautical poles' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for masts that I've seen before include "things for flags" , "Eg, transmitter towers" .)
'nautical poles' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for spars that I've seen before include "Boxes" , "disputes" .)