Chennai (Tamil Nadu), Oct 04 (ANI): The Indian and Vietnamese Coast Guards kicked off joint exercise at the Chennai coast today. The exercise aims to promote interoperability between two maritime forces. Three ships a chopper are participating in the exercise from India and a ship from Vietnam. Vietnam Coast Guard ship CSB 8001 is on its maiden visit to India and arrived at Chennai port on Tuesday. A six-member delegation of Vietnam Coast Guard also arrived in Chennai for interaction.