Section 307(3) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(3)If the sailor is not considered deserving of the medal, the fact shall be recorded by drawing a line across the recommendation column of the Service Certificate. The reason for so doing shall also be fully recorded by the Captain on the sailor's Recommendation for [promotion] [Substitued by S.R.O. 361, dated 10th November, 1975] and Conduct Record Sheet.