Section 194(7) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(7)A candidate for the Branch Rank who fails in the prescribed qualifying course may, on the expiry of 2 years from the date of failure, be allowed a further opportunity to qualify, if still otherwise eligible, and may be given his original position on the course roster, provided he satisfies the following conditions :(a)recommended for a further trial by the Captain of the ship or establishment concerned, and(b)continuously recommended for Branch Rank under Regulation 181.If accepted for the course, he shall be required to take all the courses and examination, and on qualifying, he may be considered for promotion along with other eligible sailors.Section 11 - Promotion to Senior Commissioned Officer and Above