(cf former Act s 13A (1))
This Part does not apply to:(a) the following ships unless the regulations declare otherwise:(i) a ship that has a gross tonnage of 400 or more,(ii) a ship used wholly for the purpose of recreational or sporting activities and not for hire or reward,(iii) a ship less than 30 metres in length,(iv) a seaplane,(v) a Government ship, other than a Government ship that is being used for commercial purposes, or(b) a ship of any class declared by the regulations to be a class of exempt ship for the purposes of this Part, or(c) a particular ship declared to be an exempt ship for the purposes of this Part by written notice of the Minister given to the owner or master of the ship.

Section 173