What is INS Brahmaputra?

About INS Brahmaputra:

• INS Brahmaputra is the first of the indigenously built 'Brahmaputra' class-guided missile frigates. 
  • The Brahmaputra class, which replaces the Talwar class, is an indigenous upgrade on the Godaviri class of frigates.
  • The class’s next two ships, INS Betwa and INS Beas, were similarly given river names; INS Brahmaputra is the class lead ship.
• It was built by state-run Garden Reach Shipbuilders and Engineers Limited (GRSE).
• It was commissioned into the Indian Navy in April 2000. 
• Features:
  • The ship has a displacement of 5,300 tonnes, a length of 125 metres, and a beam of 14.4 metres
  • It is capable of speeds of more than 27 knots.
  • The ship is manned by a crew of 40 officers and 330 sailors.
  • The ship is fitted with medium-range, close-range and anti-aircraft guns, surface-to-surface and surface-to-air missiles, and torpedo launchers.
  • The ship has a wide array of sensors covering all facets of maritime warfare and is capable of operating Seaking and Chetak helicopters.

Q1: What is Torpedo?

A torpedo is a self-propelled, cigar-shaped underwater missile that is launched from a submarine, surface vessel, or airplane to destroy ships by rupturing their hulls below the waterline.

Source: Mysterious Overturning of INS Brahmaputra: An Incident Amidst a String of Naval Accidents