The following persons shall be deemed to be public servants within the meaning of section 21 of the Indian Penal Code (45 of 1860), namely:--
         (a) every surveyor;
         (b) every judge, assessor or other person acting under Part XII;
         (c) every person appointed under this Act to report information as to shipping casualties;
         (d) every person authorised under this Act to make any investigation or inquiry under Part X and all persons whom he calls to his aid;
         (e) every person directed to make an investigation into an explosion or fire on a ship under section 388;
         (f) every other officer or person appointed under this Act to perform any functions thereunder.