Section 44(4) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(4)On occasions when [Indian Naval Ships] [Substitued by S.R.O. 17-E, dated 5th July, 1967] are dressed in honour of an Indian ceremonial or personage, ships wearing an Admiral's flag or Commodore's broad pendant shall wear the white ensign only at masts not occupied by either of the above; other ships shall wear the white ensign at each mast.
