Section 124(12) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(12)Promotion. - Depending on the marks obtained in the examination, Sub-Lieutenants shall serve for a period of 11h years to 21h years in that rank (including the period served as Acting Sub-Lieutenant) before promotion to the rank of Lieutenant. Should an officer fail to obtain an Engine Room Watchkeeping Certificate before he is due for confirmation in the rank of Lieutenant or Sub-Lieutenant, his promotion to the rank of Lieutenant shall be delayed correspondingly and the time thus lost shall not count as reckonable service for promotion :Provided that where the Chief of the Naval Staff is satisfied, that any officer has been unable to obtain a Watch keeping Certificate owing to the exigencies of Service, such officer may be promoted to the rank of Acting Lieutenant on the due date and confirmed in the rank of Lieutenant [on obtaining the requisite certificate with seniority of date of promotion to Acting Lieutenant.] [Substitued by S.R.O. 17-E, dated 5th July, 1967][Explanation. [Substitued by S.R.O. 5-E, dated 12th May, 1966] - Officers who specialise as Constructors and are unable to obtain their Engine Room Watch keeping Certificate, owing to the exigencies of the service, may be promoted to the confirmed rank of Lieutenant when due for such promotion. They shall also be eligible for further promotion (acting or confirmed) notwithstanding their not being in possession of the Engine Room Watch keeping Certificate. They shall, however, be required to obtain the said Watch keeping Certificate within one year of becoming available for employment in the General Service.]
