India and Sri Lanka are scheduled to hold a joint naval exercise off Trincomalee, starting Monday. The five day joint naval exercise is being seen as part of efforts to boost the bilateral defence cooperation in the post-LTTE era.The joint naval exercise will see the deployment of at least four war ships from either side including Indian Naval Ship (INS) Shivalik. INS Shivalik is the lead ship of her class of multi-role frigates of the Indian Navy. She was commissioned in April 2010. It is a 6000 tonne ship and is considered one of the largest stealth frigates in the world.