Section 182(8) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(8)Candidates qualified for Commissioned Gunner, Commissioned Gunner (Torpedo & Anti-Submarine), Commissioned Boatswain, Commissioned Boatswain (Diving), Commissioned Boatswain (Plotter Radar) and Commissioned Physical Training Officer shall be sent to sea as soon as possible, candidates holding the [rank] [Substitued by S.R.O. 192,dated 10th September, 1973] of Leading Seaman being given the [rank] [Substitued by S.R.O. 192,dated 10th September, 1973] of acting Petty Officer immediately on completion of the qualifying courses.