Section 154(1) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(1)Promotions of Short Service Commission Officers Ex-Direct entry Granted Permanent Commission shall be made, in the case of-(a)those entered as Acting Sub-Lieutenant.-Sub-Lieutenant to Lieutenant-on attaining 31h years' seniority in the rank of Sub-Lieutenant including period spent as Acting Sub-Lieutenant;(b)those entered as Sub-Lieutenant.-Sub-Lieutenant to Lieutenant-on attaining 21/2 years' seniority in the rank of Sub-Lieutenant.
