The power of the Public Works Loan Commissioners to lend money to a county council or local authority for any works authorised by this Act which are works for which that council or authority may borrow money shall extend to the lending of money to a port health authority or joint board constituted by an order under this Act, or any enactment repealed by this Act, for any works authorised by this Act and the order which are works for which that authority or board may borrow money.