There are six classes of Membership of the NZCMM:
Ordinary Membership – the holder of a certificate of competency as Master Mariner (Foreign Going) or an equivalent grade recognised by the Executive Council, issued by a properly constituted authority, or an RNZN Seaman Officer who has held seagoing command of a major NZ warship.
Country Membership – any person who qualifies as an Ordinary Member, but does not reside in a port at which a Branch of the Company has been established, may join any other Branch as a Country Member at a reduced subscription. Country members shall be entitled to all the rights of Ordinary Members.
Honorary Membership – any Branch, subject to the prior formal approval of the Executive Council, may invite any person closely connected with the Company or with the seafaring community or who has provided or is providing a service either to the Company as a whole or to the Branch, to become an Honorary Member.
Life Membership – this accolade may be conferred on any Ordinary or Country Member of the Company by Members of the Company in general meeting in recognition of outstanding services rendered to the Company, provided that the proposal is made with the precedent approval of the Executive Council. The number of Life Members of the Company shall from time to time be in the discretion of the Executive Council. Life Members shall be entitled to all the rights of Ordinary Members.
Associate Membership – the holder of a certificate of competency as Second or First Mate (Foreign Going) may apply for Associate Membership of the Company. Associate Members shall have the same voting rights as Ordinary Members.
Student Membership – any student of nautical studies – prior to obtaining a certificate of “Officer of the Watch” – can apply for this membership. This member shall have no voting rights, but will be accepted for Associate Membership once certificated, and then the same voting rights as for Ordinary Members will apply.
Associate of the Branch – any Branch may invite any person with an honourable record and associated with the Branch or with matters maritime and who wishes to associate him or herself with the activities of the Branch, to become an Associate of the Branch.
This posting is extracted from the Rules of the Company which can be found here.