As a Commodore, Ramakrishnan served as the Commodore in charge of the Kochi Workup Team. During this tenure, he was awarded the Vishisht Seva Medal on 26 January 2018.[4][5][6] He then moved to naval headquarters as Commodore (Network Centric Operations). As the Commodore (NCO), he represented India at the 2019 Trilateral Indian Ocean Maritime Security workshop in Fremantle, Australia.[7]
Ramakrishnan was promoted to flag rank and was appointed Assistant Chief of Naval Staff (Communication, Space, Network Centric Operations) (ACNS (CSNCO)) at the naval headquarters. ACNS (CSNCO) is an Assistant Principal Staff Officer appointment reporting into the Director General of Naval Operations. As On 1 April 2023, he was appointed Flag Officer Commanding Karnataka Naval Area (FOK).[8] As FOK, he was responsible for the operations and administration of all units and establishments in Karnataka, including the Naval Base Karwar.[1][9]