Another four Scorpene-class diesel-electric assault submarines are in various stages of construction. The submarines have been designed by the French company Naval Group (formerly DCNS) and manufactured at Mazagaon Dock Limited, Mumbai.
Attacking submarines can travel at 37 kilometers per hour (20 knots) while at the surface their speeds are 20 km per hour (11 knots). It can travel 12,000 km (6480 nautical miles).
INS Khanderi displaces 1,615 tonnes on the surface and 1,775 tonnes when submerged. The 67.5 meters long INS Khanderi is powered by four MTU 12V 396 SE84 diesel engines and 360 battery cells and can remain on patrol for up to 50 days at a depth of 350 meters. In this sub, can have 8 officers and 35 sailors. It will be equipped with 18 SUT torpedoes that can be fired with six-tube, C-skimming Exocet anti-ship missiles. It will carry 30 anti-ship mines.
In addition to its primary role as an attack submarine, INS Khanderi and INS Kalvari can carry out reconnaissance (intelligence gathering as well as field monitoring/espionage) missions to their sister ships and the enemy. Can also have anti-ship mines to target.
India launched the Shivalik-class stealth frigate program in 2000 and launched three such warships – INS Shivalik (commissioned on 29 April 2010), INS Satpura (20 August 2011) and INS Sahyadri (21 July 2012). The Indian Navy has ordered seven Project 17A category stealth frigates, four of which will be built at MDL and the remaining three at Garden Reach Shipbuilders and Engineers Limited (GRSE) in Kolkata.
Project 17A class frigates will feature stealth features, improved radar, and improved weapon systems. Their top speed is 52 km per hour (28 knots) and they will also be able to carry two helicopters, which can be the HAL Dhruv or Sea King Mk 42B. Project 17A frigates will have a maximum range of 30,33 kmph (16–18 nautical miles) at 10,200 km (5,500 nautical miles).
Source: Zee News India