(a) controlling the movement of people or ships or any other thing within
security regulated ports;
(b) restricting access to areas within security regulated ports;
(c) providing cleared areas within security regulated ports;
(d) preventing interference with ships;
(e) preventing interference with people or goods that have been, or are to
be, transported by ship;
(f) ensuring the security of the following:
(i) fuel storage areas;
(ii) cargo and baggage handling facilities;
(iii) navigational aids;
(iv) critical installations.