27. If the Authority gives to the officer of Government, whose duty is to grant the port- clearance of any vessel, a notice stating that an amount therein specified is due in respect of tolls, dues, rates, charges or penalties chargeable under this Ordinance, or any regulations or orders made thereunder, against such vessel, or by the owner or master of such vessel in respect thereof, or against or in respect of any goods on board such vessel, such officer shall not grant such port-clearance until the amount so chargeable has been paid.