Section 125(3)(e) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(e)Cases of officers who do not receive the Certificate of Competency within 6 months of sea service shall be referred to the Chief of the Naval Staff. No officer shall be promoted before the date of his seniority as a Lieutenant calculated in accordance with [Sub-regulation (6)] [Substitued by S.R.O. 17E, dated 5th July, 1967]