I have a J34 mainsail from UK and it's a full batton sail. But just
below the top batten is a another slot for another batten, but this
mounted on a downward angle. Can someone please explain the purpose of
this?

Also: Does anyone know where I can get EXACT sail size/measurements for
J boat, Melges, C&C, Beneteau and others?

Thanks,


RB
35s5
NY