India’s defence power is expanding with each passing day. From Rafael aircrafts in the sky to Scorpene submarines under the water, India is expanding its military capacities. In October 2020, India secretly commissioned a top-secret specialized ocean surveillance warship called INS Dhruv. It is a research vessel and missile range instrumentation ship. Built by India's Hindustan Shipyard Limited (HSL), India's largest Shipyard, it can track missiles including nuclear missiles, giving an early warning if any country launches a missile against India. Here's all you need to know about it!