Defence Minister A K Antony has said that in the aftermath of the November 2008 Mumbai terror attack, the challenge to guard India's sea lanes has increased considerably. <br/><br/>Speaking after the commissioning of the INS Shivalik, country's first indigenous stealth frigate at Mazgaon docks in Mumbai today, Mr. Antony said the Indian Navy's challenge to protect the country's sea lanes has increased as the situation across the region is becoming more and more tenuous and dangerous. He underlined that piracy is fast becoming a menace in the high seas of the region, and said the Indian Navy must be prepared to take on the challenge with full force in order to protect commercial interests also. <br/><br/>Mr. Antony noted that with the changing scenario and increasing challenges, the modernisation of the naval force is also very important, and added that the government is aware of its responsibilities in this regard.<br/><br/>AIR correspondent Manikant Thakur covering the event aboard INS Shivalik reports that more than 60 percent of the components fitted in the brand new warship is indigenous.<br/>