Section 161 in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
161. Promotion of Officers from the rank of Lieutenant and above shall be made.
(a)from Lieutenant to Lieutenant-Commander. - On attaining 8 years' seniority in the rank of Lieutenant.(b)from Lieutenant-Commander to Commander:-(i)By Selection. - By selection from officers who have attained 2 years' seniority but not more than 10 years' seniority in the rank of Lieutenant-Commander. An officer should have held charge of electrical machinery of one of Indian Naval Ships for at least one year in the rank of Lieutenant-Commander or Acting Lieutenant-Commander.(ii)By Time Scale.-In accordance with Regulation 151.(c)from Commander to Captain.-By selection from officers who have attained 4 years' seniority in the rank of Commander. An officer should have served one year afloat in an appointment tenable by an officer of the rank of Commander.(d)from Captain to Rear Admiral.-By selection from officers of the rank of Captain.
