Before the person in charge of a ship or aircraft in a port shall obtain outward clearance from that port he or she shall first obtain from an officer authorised by the General Manager a certificate stating that—
(a) all dues and charges in respect of the ship or aircraft and all penalties and expenses to which the ship or aircraft and the person in charge are liable under this Act or regulations have been paid or secured to the satisfaction of the person authorised by the General Manager; and
(b) he or she has complied with the provisions of this Act and the regulations.