Section 124(11) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(11)Confirmation. - On completion of their probationary period, provided they have obtained the Engine Room Watchkeeping Certificate and their progress and conduct have been satisfactory, the officers in possession of Certificate of Competency referred to in cl. (a) of sub-regulation (3) shall be confirmed in the rank of Lieutenant with their original seniority in that rank. Other officers shall, on completion of their probationary period, be confirmed in the rank of Sub-Lieutenant with seniority of date as Acting Sub-Lieutenant provided :(a)their progress and conduct have been satisfactory;(b)they have passed the examination referred to in sub-regulation (10); and(c)they have obtained the Engine Room Watchkeeping Certificate.
