Section 122(8) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(8)Rank on Entry.(a)Those holding Certificate of Competency as a Master or a Mate shall be entered as Acting Lieutenant. Suitably qualified candidates who are in possession of a Certificate of Competency as a Master, may be granted up to a maximum of 2 years seniority in the rank of Lieutenant, at the discretion of the Chief of the Naval Staff. I'(b)Those holding Certificate of Competency as a Second Mate shall be entered as Acting Sub-Lieutenant. Suitably qualified candidates may be granted up to a maximum of 11h years seniority in that rank at the discretion of the Chief of the Naval Staff.(c)Others shall be entered as Acting Sub-Lieutenant.