Section 373 in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
373. Occasions on which uniform is worn.
(1)Officers on the Active List shall wear naval uniform when borne on the books of one of Indian Navy Ships.(2)Officers on the Active or Retired List may wear the prescribed naval uniform on occasions of State or Ceremony within India. Such occasions may be deemed to include Reviews, official functions or entertainments given by Army, Naval or Air Force authorities or by civil functionaries.(3)Officers shall not wear naval uniform at other times.
