In this Part:
"relevant function" means any of the following functions of the port operator of a designated port:
(a) functions under Part 5, Divisions 2 and 3;
(b) functions in relation to the movement, handling or storage of dangerous goods under this Act;
(c) functions in relation to the closure of waters of the port under section 50;
(d) functions in relation to pilotage under Part 8, Division 3;
(e) functions in relation to marine navigational aids under Part 9.