Section 182(2) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(2)Before a candidate is selected to undergo the prescribed course referred to in cl. (c) sub-regulation (1) he must :(a)be qualified under Regulation 181;(b)be qualified for' [promotion] to acting Petty Officer;(c)have passed the educational test for Branch Rank;(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;(e)have qualified in the Radar Plotting 1st class specialist qualification course, if a candidate for Commissioned Boatswain (Plotter Radar);(f)be a Diver-I qualified in deep sea diving if a candidate for Commissioned Boatswain (Diving).