1. Employment in the State under any contract of service or apprenticeship, written or oral, whether expressed or implied, and whether the employed person is paid by the employer or some other person, and whether under one or more employers, and whether paid by time or by the piece or partly by time and partly by the piece, or otherwise, or without any money payment.
2. Employment under such a contract as aforesaid -
(a) as master or a member of the crew of -
(i) any ship registered in the State, or
(ii) any other ship or vessel of which the owner, or, if there is more than one owner, the managing owner or manager, resides or has his principal place of business in the State, or
(b) as captain or a member of the crew of -
(i) any aircraft registered in the State, or
(ii) any other aircraft of which the owner, or, if there is more than one owner, the managing owner or manager, resides or has his principal place of business in the State.
3. Employment in the civil service