Why in news?

• Vagsheer, sixth and last submarine of Project 75, has been launched.
• Vagsheer is a diesel attack submarine, designed to perform sea denial as well as access denial warfare.
• It is also capable of performing anti-surface warfare, anti-submarine warfare, inteligence gathering, mine laying and area surveillance related operations.
• P 75 is one of two lines of submarines, other being P75I, as part of a plan for indigenous submarine construction with technology taken from overseas firms.
• Under P75, Kalvari, Khanderi, Karanj and Vela have been commissioned. Sea trials are on for Vagir.
• Constructed by: Mazagon Dock Ltd