Section 97(2) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(2)In all cases when both ships are under way the above marks of respect shall be paid and returned by pipe only, guards if paraded, coming to the "slope". If a foreign warship under this sub-regulation should act or appear likely to act as laid down in sub-regulation (1), reciprocal action shall be taken by Indian Naval Ships passing or being passed by such warship.
