Section 2. In section 3 of the Navy Act, 1957 (hereinafter referred to as the principal Act), for clause (16), the following clause shall be substituted, namely:

2. In section 3 of the Navy Act, 1957 (hereinafter referred to as the principal Act), for clause (16), the following clause shall be substituted, namely:— '(16) "Officer" means a commissioned officer and includes— (a) a subordinate officer other than a petty officer; (b) a commissioned officer re-employed as such;'.