Section 123(3)(f) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(f)[ Cases of officers who do not secure the Engine Room Watchkeeping Certificate within 8 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. 5-E,d ated 12th May, 1966]