Section 182(2)(d) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(d)have passed the seamanship examination for Branch Rank. Prior to taking the seamanship examination a candidate will be required to produce a certificate to the effect that he is in all respects medically fit. This examination is to be held by a Board to be constituted under the authority of the Chief of the Naval Staff;