Subject to the provisions of this Act and the regulations—
(a) every ship which enters a port for the purpose of loading or unloading cargo or embarking or disembarking passengers or which occupies an anchorage or berth within a port; and
(b) every aircraft which uses a port,
shall pay to the Authority the dues and charges in respect of such ship or aircraft and for any service performed or facility provided in respect of such ship or aircraft in accordance with the regulations under this Part.