What’s in News:

• Russia has assured India that it would deliver the two Talwar–class stealth frigates under construction there as per schedule.
• As per a 2016 Inter–Governmental Agreement (IGA), two stealth frigates are under construction in Russia under a $1–billion deal while two more are being built by the Goa Shipyard Limited (GSL) under technology transfer.

What are frigates

• Frigates are naval vessels intermediate between corvettes and destroyers, and have had a significant role in the naval history of India.
• Frigates which employ stealth technology construction techniques in an effort to ensure that it is harder to detect by one or more of radar, visual, sonar, and infrared methods.

Reference:

1. https://www.thehindu.com/news/national/delivery-of-stealth-frigates-as-per-schedule-russia/article65326853.ece