43. — (1) In Part III of the Principal Act and in this Act, the expression “ passenger ” means any person carried in a ship, except—

(a) a person employed or engaged in any capacity on board the ship on the business of the ship,

(b) a person on board the ship either in pursuance of the obligation laid upon the master to carry shipwrecked, distressed or other persons or by reason of any circumstance that neither the master nor the owner nor the charterer (if any) could have prevented or forestalled, and

(c) a child under one year of age.

(2) In this Act the expression “ passenger steamer ” means a steamer carrying more than twelve passengers.