A naval personnel stands guard on India's largest naval ship the INS Vikramaditya as she anchors in the Sri Lankan capital Colombo on Jan. 21, 2016.

India is preparing to relaunch its INS Vikramaditya aircraft carrier after a major refit, a critical step toward fulfilling its plan to deploy two carrier battle groups as it seeks to strengthen its regional maritime power to counter China's increasing assertiveness.

The Vikramaditya, a former Soviet carrier acquired from Russia, is expected to be launched imminently and will join India's first domestically built carrier that was launched in September, the INS Vikrant, in undergoing outfitting and sea trials, with the plan to have both fully operational later this year.