Commutation of tonnage duty

The Harbour Board may permit the tonnage duty payable in respect of any ship for any period of not less than one month nor more than one year to be commuted by the payment monthly, quarterly or half yearly in advance of such sum as may Harbours and Merchant Shipping 9 be approved by the Harbour Board, subject to such conditions as the Board may deem expedient, and subject further to the approval of the National Assembly.